Zdeněk Jirák
Publications:
-
K. Ahn, Z. Jirák, K. Knížek, P. Levinský, M. Soroka, L. Beneš, J. Zich, J. Navrátil, J. Hejtmánek
Heat capacity and thermal conductivity of CdCr2Se4 ferromagnet: magnetic field dependence, experiment and calculations
J. Phys. Chem. Solids 174 (2023) 111139(1)
- 111139().
-
K. Knížek and Z. Jirák
Magnetic proximity effects at the ferrite/5d metal interface: the GGA+U calculations
Phys. Rev. B 108 (2023) 035145(1)
- 035145(8).
-
D. P. Kozlenko, E. V. Lukin, S. E. Kichanov, Z. Jirák, N. O. Golosova, and B. N. Savenko
High-pressure evolution of the magnetic order in LaMnO3
Phys. Rev. B 107 (2023) 144426(1)
- 144426(8).
-
J. Zich, M. Míšek, V. Holý, K. Carva, J. Čížek, J. Navrátil, P. Čermák, P. Knotek, K. Čermák Šraitrová, S. Cichoň , J. Hejtmánek , Z. Jirák, Č. Drašar
FexBi2Se3 superconductivity, dimensional transport, and high electron mobility are associated with the natural nanostructure of Bi2Se3 single crystals
Phys. Rev. B 108 (2023) 125308(1)
- 125308(13).
-
K. Ahn, A. Marmodoro, J. Hejtmánek, Z. Jirák, K. Knížek
Role of spin-orbit coupling in canted ferromagnetism and spin-wave dynamics of SrRuO3
Phys. Rev. B 105 (2022) 245107(1)
- 245107(8).
-
N. M. Belozerova, S. E. Kichanov, Z. Jirák, D. P. Kozlenko, O. Kaman, E. V. Lukin, B. N. Savenko
The crystal and magnetic structure of nanostructured manganite
La0.53Sr0.47MnO3 at high pressure
Mater. Chem. Phys. 262 (2021) 124310(1)
- 124310(8).
-
O. Kaman, D. Kubániová, K. Knížek, L. Kubíčková, M. Klementová, J. Kohout, Z. Jirák
Structure and magnetic state of hydrothermally prepared Mn-Zn ferrite nanoparticles
J. Alloy. Compd. 888 (2021) 161471(1)
- 161471(14).
-
K. Knížek, P. Novák and Z. Jirák
Exchange interactions in ɛ-Fe2O3: GGA + U calculations
J. Phys.-Condens. Mat. 33 (2021) 155502(1)
- 155502(7).
-
Karel Knížek, Miroslav Soroka, Ondřej Kaman, Jarmila Kuličková, Petr Levinský, Jiří Hejtmánek, and Zdeněk Jirák
Electronic and heat transport phenomena in the nanogranular thiospinel
Fe3S4
Phys. Rev. B 103 (2021) 245129(1)
- 245129(17).
-
D. Nuzhnyy, V. Bovtun, M. Savinov, M. Kempa, J. Petzelt, O. Kaman, M. Klementová, J. Kuličková, Z. Jirák
Synthesis and broadband dielectric-infrared spectroscopy of La1-xSrxMnO3@BaTiO3 nanocomposite
Mater. Res. Bull. 144 (2021) 111459(1)
- 111459(14).
-
M. Soroka, K. Knížek, Z. Jirák, P. Levinský, M. Jarošová, J. Buršik, and J. Hejtmánek
Anomalous Nernst effect in the ceramic and thin film samples of La0.7Sr0.3CoO3 perovskite
Phys. Rev. Mater. 5 (2021) 035401(1)
- 035401(10).
-
P. Veverka, L. Kubíčková, Z. Jirák, V. Herynek, M. Veverka, O. Kaman
Temperature and field dependences of transverse relaxivity of Co–Zn ferrite nanoparticles coated with silica: The role of magnetic properties and different regimes
Mater. Chem. Phys. 260 (2021) 124178(1)
- 124178(8).
-
N. M. Belozerova, S. E. Kichanov, D. P. Kozlenko, O. Kaman, Z. Jirák, E. V. Lukin, B. N. Savenko
Neutron diffraction study of the crystal and magnetic structures of nanostructured Zn0.34Fe2.53O4 ferrite
J. Nanopart. Res. 22 (2020) 121(1)
- 121(9).
-
D. Nuzhnyy, J. Petzelt, V. Bovtun, M. Savinov, P. Bednyakov, M. Kempa, O. Kaman, P. Levinský, J. Hejtmánek, Z. Jirák
Broadband dielectric spectroscopy of La0.65Sr0.35MnO3@TiO2 core–shell nanocomposites
J. Phys.-Condens. Mat. 32 (2020) 415701(1)
- 415701(12).
-
O. Kaman, Z. Jirák, J. Hejtmánek, A. Ndayishimiye, M. Prakasam, G. Goglio
Tunneling magnetoresistance of hydrothermally sintered La1-xSrxMnO3-silica nanocomposites
J. Magn. Magn. Mater. 479 (2019) 135
- 143.
-
O. N. Lis, S. E. Kichanov, D. P. Kozlenko, Z. Jirák, A. V. Belushkina, B. N. Savenko
Pressure-induced spin state crossover in layered cobaltite LaSrCoO4
J. Magn. Magn. Mater. 487 (2019) 165360(1)
- 165360(5).
-
J. Stergar, Z. Jirák, P. Veverka, L. Kubíčková, T. Vrba, J. Kuličková, K. Knížek, F. Porcher, J. Kohout, O. Kaman
Mn-Zn ferrite nanoparticles coated with mesoporous silica as core materiál for heat-triggered release of therapeutic agents
J. Magn. Magn. Mater. 475 (2019) 429
- 435.
-
P. Veverka, M. Pashchenko, L. Kubíčková, J. Kuličková, Z. Jirák, R. Havelek, K. Královec, J. Kohout, O. Kaman
Rod-like particles of silica-coated maghemite: synthesis via akaganeite, characterization and biological properties
J. Magn. Magn. Mater. 476 (2019) 149
- 156.
-
Z. Jirák, O. Kaman, K. Knížek, P. Levinský, M. Míšek, P. Veverka, J. Hejtmánek
High-field magnetoconductance in La-Sr manganites of FM and AFM ground states
J. Magn. Magn. Mater. 456 (2018) 167
- 178.
-
O. Kaman, V. Herynek, P. Veverka, L. Kubíčková, M. Pashchenko, J. Kuličková, and Z. Jirák
Transverse Relaxivity of Nanoparticle Contrast Agents for MRI: Different Magnetic Cores and Coatings
IEEE Trans. Magn. 54 (2018) 5300405(1)
- 5300405(5).
-
A. Ndayishimiye, S. Buffière, M. -A. Dourges, A. Largeteau, M. Prakasam, S. Mornet, O. Kaman, Z. Jirák, J. Hejtmánek, G. Goglio
Design of 0–3 type nanocomposites using hydrothermal sintering
Scripta Mater. 148 (2018) 15
- 19.
-
N. M. Belozerova, S. E. Kichanov, D. P. Kozlenko, O. Kaman and Z. Jirák
Core-Shell Magnetic Structure of La1-xSrxMnO3+δ Nanocrystallites
IEEE Trans. Magn. 53 (2017) 2300905(1)
- 2300905(5).
-
H. Fujishiro, , Y. Noda, K. Akuzawa, T. Naito, A. Ito, T. Goto, M. Maryško, Z. Jirák, J. Hejtmánek, and K. Nitta
Electrical resistivity anomaly, valence shift of Pr ion, and magnetic behavior in epitaxial (Pr1-yYy)1-xCaxCoO3 thin films under compressive strain
J. Appl. Phys. 121 (2017) 115104(1)
- 115104(8).
-
J. Hejtmánek, Z. Jirák, O. Kaman and S. Vratislav
Tunneling magnetoresistance in nanogranular La1-xSrxMnO3 (x∼0.5)
AIP Adv. 7 (2017) 055818(1)
- 055818(6).
-
Z. Jirák, J. Hirschner, O. Kaman, K. Knížek, P. Levinský, M. Maryško, J. Hejtmánek
Structure and transport properties of La1−xSrxMnO3 granular ceramics
J. Phys. D-Appl. Phys. 50 (2017) 075001(1)
- 075001(15).
-
Z. Jirák, J. Kuličková, V. Herynek, M. Maryško, J. Koktan, O. Kaman
Titania-coated manganite nanoparticles: Synthesis of the shell, characterization and MRI properties
J. Magn. Magn. Mater. 427 (2017) 245
- 250.
-
O. Kaman, J. Kuličková, V. Herynek, J. Koktan, M. Maryško, T. Dědourková, K. Knížek, Z. Jirák
Preparation of Mn-Zn ferrite nanoparticles and their silica-coated clusters: Magnetic properties and transverse relaxivity
J. Magn. Magn. Mater. 427 (2017) 251
- 257.
-
O. Kaman, J. Kuličková, M. Maryško, P. Veverka, V. Herynek, R. Havelek,
K. Královec, D. Kubániová, J. Kohout, P. Dvořák, Z. Jirák
Mn-Zn Ferrite Nanoparticles with Silica and Titania Coatings: Synthesis, Transverse Relaxivity and Cytotoxicity
IEEE Trans. Magn. 53 (2017) 1
- 8.
-
K. Knížek, Z. Jirák, O. Kaman, M. Maryško and F. Damay
Effect of Tb3+ doping in mixed-valence manganites and cobaltites
J. Phys.-Condens. Mat. 29 (2017) 405802(1)
- 405802(9).
-
J. Koktan, G. Goglio, J. Hejtmánek, Z. Jirák, K. Knížek, J. Kuličková, M. Maryško, O. Kaman
Magnetoconductivity of the La1-xSrxMnO3@TiO2 Nanocomposite
IEEE Trans. Magn. 53 (2017) 8109606(1)
- 8109606(6).
-
P. Veverka, O. Kaman, K. Knížek, P. Novák, M. Maryško, Z. Jirák
Magnetic properties of rare-earth-doped La0.7Sr0.3MnO3
J. Phys.-Condens. Mat. 29 (2017) 035803(1)
- 035803(9).
-
O. Kaman, J. Hejtmánek, Z. Jirák, K. Knížek, M. Maryško, P. Novák, S.
Vratislav
Effects of Tb3+ dopants in the La1-xSrxMnO3 bulk and nanoparticle ferromagnets
J. Phys.-Condens. Mat. 28 (2016) 206001(1)
- 206001(8).
-
H. Němec, K. Knížek, Z. Jirák, J. Hejtmánek, M. Soroka, J. Buršík
Charge transport in thin layer NaxCoO2 (x ∼ 0.63) studied by terahertz spectroscopy
J. Phys.-Condens. Mat. 28 (2016) 355601(1)
- 355601(6).
-
Y. Noda, H. Fujishiro, T. Naito, A. Ito, T. Goto, J. Hejtmanek, Z. Jirak
Electrical resistivity anomaly in (Pr1−yMy)1−xCaxCoO3 epitaxial films (M=Y, Gd) fabricated by pulsed laser deposition
AIP Adv. 6 (2016) 025318(1)
- 025318(9).
-
N. M. Belozerova, S. E. Kichanov, Z. Jirák, D. P. Kozlenko, M. Kačenka, O. Kaman, E. V. Lukin, B. N. Savenko
High pressure effects on the crystal and magnetic structure of
nanostructured manganites La0.63Sr0.37MnO3 and La0.72Sr0.28MnO3
J. Alloy. Compd. 646 (2015) 998
- 1003.
-
T. Dědourková, O. Kaman, P. Veverka, J. Koktan, M. Veverka, J. Kuličková, Z. Jirák, V. Herynek
Clusters of magnetic nanoparticles as contrast agents for MRI: the effect of aggregation on T2 relaxivity
IEEE Trans. Magn. 51 (2015) 5300804(1)
- 5300804(3).
-
J. Hejtmánek, Z. Jirák, and J. Šebek
Spin-entropy contribution to thermopower in the [Ca2CoO3-t ]0.62(CoO2) misfits
Phys. Rev. B 92 (2015) 125106(1)
- 125106(11).
-
Z. Jirák, M. Kačenka, O. Kaman, M. Maryško, N. Belozerova, S. Kichanov, D. Kozlenko
Role of surface on magnetic properties of La1-xSrxMnO3+δ nanocrystallites
IEEE Trans. Magn. 51 (2015) 1000204(1)
- 1000204(3).
-
M. Kačenka, O. Kaman, Z. Jirák, M. Maryško, P. Veverka, M. Veverka, S. Vratislav
The magnetic and neutron diffraction studies of La1-xSrxMnO3 nanoparticles prepared via molten salt synthesis
J. Solid State Chem. 221 (2015) 364
- 372.
-
M. Kačenka, O. Kaman, S. Kikerlová, B. Pavlů, Z. Jirák, D. Jirák, V. Herynek, J. Černý, F. Chaput, S. Laurent, I. Lukeš
Fluorescent magnetic nanoparticles for cell labeling: Flux synthesis of manganite particles and novel functionalization of silica shell
J. Colloid. Interf. Sci. 447 (2015) 97
- 106.
-
O. Kaman, T. Kořínková, Z. Jirák, M. Maryško, M. Veverka
The superspin glass transition in zinc ferrite nanoparticles
J. Appl. Phys. 117 (2015) 17C706(1)
- 17C706(4).
-
K. Knížek, Z. Jirák, J. Hejtmánek, P. Brázda, J. Buršík, M. Soroka, P. Beran
Structural study of layered cobaltate Lax/3CoO2 (x ~ 1) at temperatures up to 800 K
J. Solid State Chem. 229 (2015) 160
- 163.
-
K. Knížek, P. Novák, Z. Jirák, J. Hejtmánek, M. Maryško, J. Buršík
Magnetism and transport properties of layered rare-earth cobaltates Ln0.3CoO2
J. Appl. Phys. 117 (2015) 17B706(1)
- 17B706(4).
-
P. Novák, K. Knížek, Z. Jirák, J. Buršík
The calculation of rare-earth levels in layered cobaltates Rx/3CoO2 (x≦1)
J. Magn. Magn. Mater. 381 (2015) 145
- 150.
-
P. Veverka, O. Kaman, M. Kačenka, V. Herynek, M. Veverka, E. Šantavá, I. Lukeš, Z. Jirák
Magnetic La1-xSrxMnO3 nanoparticles as contrast agents for MRI: the parameters affecting 1H transverse relaxation
J. Nanopart. Res. 17 (2015) 33(1)
- 33(11).
-
Z. Jirak, J. Hejtmanek, K. Knizek, P. Novak, E. Santava, H. Fujishiro
Magnetism of perovskite cobaltites with Kramers rare-earth ions
J. Appl. Phys. 115 (2014) 17E118 (1)
- 17E118 (3).
-
M. Kačenka, O. Kaman, Z. Jirák, M. Maryško, P. Žvátora, S. Vratislav and I. Lukeš
Magnetic properties of La1-xSrxMnO3 nanoparticles prepared in
a molten salt
J. Appl. Phys. 115 (2014) 17B525(1)
- 17B525(3).
-
K. Knizek, Z. Jirak, J. Hejtmanek, M. Veverka, O. Kaman, M. Marysko,
E. Santava, and G. Andre
Effect of Ising-type Tb3+ions on the low-temperature magnetism of La, Ca cobaltite
J. Phys.-Condens. Mat. 26 (2014) 116003(1)
- 116003(9).
-
K. Knížek, Z. Jirák, P. Novák, C. de la Cruz
Non-collinear magnetic structures of TbCoO3 and DyCoO3
Solid State Sci. 28 (2014) 26
- 30.
-
M. Maryško, J. Hejtmánek, Z. Jirák, O. Kaman, K. Knížek
Terbium induced glassy magnetism in La,Ca-based cobaltites
J. Appl. Phys. 115 (2014) 17E103(1)
- 17E103(3).
-
Tomoyuki Naito, Hiroyuki Fujishiro, Terukazu Nishizaki, Norio Kobayashi,
J. Hejtmánek, K. Knížek and Z. Jirák
Suppression of the metal-insulator transition by magnetic field
in (Pr1-yYy)0.7Ca0.3CoO3 (y=0.0625)
J. Appl. Phys. 115 (2014) 233914(1)
- 233914(5).
-
Jessica Padilla-Pantoja, José Luis García-Muñoz, Bernat Bozzo, Z. Jirák, Javier Herrero-Martín
Structural Properties and Singular Phase Transitions of Metallic
Pr0.50Sr0.50CoO3 Cobaltite
Inorg. Chem. 53 (2014) 12297
- 12304.
-
N. T. Dang, D. P. Kozlenko, S. E. Kichanov, L. S. Dubrovinsky, Z. Jirák, D. M. Levin, E. V. Lukin and B. N. Savenko
Structural and Magnetic Phase Transitions Occurring in Pr0.7Sr0.3MnO3 Manganite at High Pressures
J. Exp. Theor. Phys. Lett. 97 (2013) 540
- 545.
-
H. Fujishiro, T. Naito, D. Takeda, N. Yoshida, T. Watanabe, K. Nitta, J. Hejtmánek, K. Knížek, and Z. Jirák
Simultaneous valence shift of Pr and Tb ions at the spin-state transition in (Pr1-yTby)0.7Ca0.3CoO3
Phys. Rev. B 87 (2013) 155153(1)
- 155153(7).
-
J. Hejtmánek, Z. Jirák, O. Kaman, K. Knížek, E. Šantavá, K. Nitta, T. Naito, H. Fujishiro
Phase transition in Pr0.5Ca0.5CoO3 and related cobaltites
Eur. Phys. J. B 86 (2013) 305(1)
- 305(8).
-
Z. Jirák, J. Hejtmánek, K. Knížek, M. Maryško, P. Novák, E. Šantavá, T. Naito, H. Fujishiro
Ground-state properties of the mixed-valence cobaltites Nd0.70Sr0.3CoO3, Nd0.7Ca0.3.CoO3 and Pr0.7.Ca0.3CoO3
J. Phys.-Condens. Mat. 25 (2013) 216006(1)
- 216006(12).
-
K. Knížek, J. Hejtmánek, M. Maryško, P. Novák, E. Šantavá, Z. Jirák, T. Naito, H. Fujishiro, C. de la Cruz
Spin-state crossover and low-temperature magnetic state in yttrium-doped Pr0.7Ca0.3CoO3
Phys. Rev. B 88 (2013) 224412(1)
- 224412(8).
-
D. P. Kozlenko, N. T. Dang, S. E. Kichanov, E. V. Lukin, K. Knížek, Z. Jirák, L. S. Dubrovinsky, V. I. Voronin and B. N. Savenko
Pressure-induced structural transformations, orbital order and antiferromagnetism in La0.75Ca0.25MnO3
Eur. Phys. J. B 86 (2013) 360(1)
- 360(8).
-
P. Novák, K. Knížek, M. Maryško, Z. Jirák and J. Kuneš
Crystal field and magnetism of Pr3+ and Nd3+ ions in orthorhombic perovskites
J. Phys.-Condens. Mat. 25 (2013) 4460001(1)
- 4460001(8).
-
N. T. Danga, D. P. Kozlenko, S. E. Kichanov, Z. Jirák, E. V. Lukin, and B. N. Savenko
High Pressure Effect on the Crystal and Magnetic Structure of Pr0.1Sr0.9MnO3 Manganite
J. Surf. Ingestig.-X-Ray Synchro. 6 (2012) 817
- 820.
-
H. Fujishiro, T. Naito, S. Ogawa, N. Yoshida, K. Nitta, J. Hejtmánek, K. Knížek, and Z. Jirák
Valence Shift of Pr Ion from 3+ to 4+ in (Pr1-yYy)..0.7Ca0.3CoO3 Estimated by X-Ray Absorption Spectroscopy
J. Phys. Soc. Jpn. 81 (2012) 064709(1)
- 064709(5).
-
J. Hejtmánek, K. Knížek, M. Maryško, Z. Jirák, D. Sedmidubský, O. Jankovský, Š. Huber, P. Masschelein, B. Lenoir
Magnetic and magnetotransport properties of misfit cobaltate Ca3Co3.93O9+δ
J. Appl. Phys. 111 (2012) 07D715(1)
- 07D715(3).
-
A. I. Beskrovnyy and Z. Jirák
Structural modulation in Bi2Sr2Ca0.4Y0.6Cu2O8+δ
J. Phys.: Conf. Ser. 340 (2012) 012055(1)
- 012055(5).
-
S. E. Kichanov, D. P. Kozlenko, A. V. Belushkin, V. F. Reutov, S. O. Samoilenko, Z. Jirák, B. N. Savenko, L. A. Bulavin and Y. V. Zubavichus
A study of formation of iron nanoparticles in aluminium matrix with helium pores
J. Phys.: Conf. Ser. 351 (2012) 012013(1)
- 012013(5).
-
K. Knížek, J. Hejtmánek, M. Maryško, Z. Jirák, J. Buršík
Stabilization of the high-spin state of Co3+ in LaCo1-xRhxO3
Phys. Rev. B 85 (2012) 134401(1)
- 134401(7).
-
K. Knížek, Z. Jirák, J. Hejtmánek, M. Maryško, J. Buršík
Structure and properties of novel cobaltates Ln0.3CoO2 (Ln = La, Pr, and Nd)
J. Appl. Phys. 111 (2012) 07D707(1)
- 07D707(3).
-
M. Maryško, Z. Jirák, J. Hejtmánek and K. Knížek
Glassy ferromagnetism and phase separation in Pr0.5Ca0.5CoO3
J. Appl. Phys. 111 (2012) 07E110(1)
- 07E110(3).
-
M. Dlouhá, J. Hejtmánek, Z. Jirák, K. Knížek, M. Veverka, S. Vratislav
Structure and Electric Transport in LaCo0.67Cu0.33O3
J. Superconductivity and Novel Magnetism 24 (2011) 747
- 751.
-
N. O. Golosova, D. P. Kozlenko, A. I. Kolesnikov, V. Yu. Kazimirov, M. B. Smirnov, Z. Jirák, and B. N. Savenko
Evolution of the phonon density of states of LaCoO3 over the spin state transition
Phys. Rev. B 83 (2011) 214305(1)
- 214305(6).
-
O. Kaman, P. Veverka, Z. Jirák, M. Maryško, K. Knížek, M. Veverka, P. Kašpar, M. Burian, V. Šepelák, E. Pollert
The magnetic and hyperthermia studies of bare
and silica-coated La0.75Sr0.25MnO3 nanoparticles
J. Nanopart. Res. 13 (2011) 1237
- 1252.
-
K. Knížek, J. Hejtmánek, M. Maryško, E. Šantavá, Z. Jirák, J. Buršík, K. Kirakci, P. Beran
Structure and properties of a novel cobaltate La0.30CoO2
J. Solid State Chem. 184 (2011) 2231
- 2237.
-
D. P. Kozlenko, T. A. Chan, S. E. Kichanov, Z. Jirák, L. S. Dubrovinsky, and B. N. Savenko
Structural and Magnetic Phase Transitions in Pr0.7Ca0.3MnO3 at High Pressures
J. Exp. Theor. Phys. Lett. 92 (2011) 590
- 594.
-
M. Maryško, Z. Jirák, K. Knížek, P. Novák, J. Hejtmánek, T. Naito, H. Sasaki, and H. Fujishiro
Thermally and field driven spin-state transitions in (Pr(1-y)Yy)Ca0.3CoO3
J. Appl. Phys. 109 (2011) 07E127-1
- 07E127-3.
-
M. Veverka, Z. Jirák, O. Kaman, K. Knížek, M. Maryško,
E. Pollert, K. Závěta, A. Lančok, M. Dlouhá and S. Vratislav
Distribution of cations in nanosize and bulk Co-Zn ferrites
Nanotechnology 22 (2011) 345701(1)
- 345701(7).
-
M. Dlouhá, J. Hejtmánek, Z. Jirák, K. Knížek, P. Tomeš, S. Vratislav
Antiferromagnetic ordering in the double perovskites La2-xSrxCoRuO6
J. Magn. Magn. Mater. 322 (2010) 1189
- 1191.
-
J. Hejtmánek, E. Šantavá, K. Knížek, M. Maryško, and Z. Jirák, T. Naito, H. Sasaki, and H. Fujishiro
Metal-insulator transition and the Pr3+/Pr4+ valence shift in (Pr1-yYy)0.7Ca0.3CoO3
Phys. Rev. B 82 (2010) 165107(1)
- 165107(7).
-
Z. Jirák, E. Hadová, O. Kaman, K. Knížek, M. Maryško, E. Pollert, M. Dlouhá, S. Vratislav
Ferromagnetism versus charge ordering in the Pr0.5Ca0.5MnO3 and La0.5Ca0.5MnO3 nanocrystals
Phys. Rev. B 81 (2010) 024403(1)
- 024403(8).
-
K. Knížek, J. Hejtmánek, P. Novák, Z. Jirák
Charge transfer, valence, and the metal-insulator transition in Pr0.5Ca0.5CoO3
Phys. Rev. B 81 (2010) 155113(1)
- 155113(5).
-
K. Knížek, Z. Jirák, J. Hejtmánek, P. Novák
Transition from the diamagnetic insulator to ferromagnetic metal in La1-xSrxCoO3
J. Magn. Magn. Mater. 322 (2010) 1221
- 1223.
-
D. P. Kozlenko, N. T. Dang, Z. Jirák, S. E. Kichanov, E. V. Lukin, B. N. Savenko, L. S. Dubrovinsky, C. Lathe, and C. Martin
Structural and magnetic phase transitions in Pr0.15Sr0.85MnO3 at high pressure
Eur. Phys. J. B 77 (2010) 407
- 411.
-
M. Maryško, Z. Jirák, K. Knížek, C. Autret-Lambert
Static and dynamic behavior of the cluster phase in LaMn0.6Co0.4O3
J. Magn. Magn. Mater. 322 (2010) 1392
- 1395.
-
M. Maryško, E. Pollert, O. Kaman, P. Veverka, Z. Jirák
Manganese Perovskite Nanoparticles and the Downturn of Inverse Susceptibility above the Curie Temperature
Acta Phys. Polon. A 118 (2010) 792
- 793.
-
V. Procházka, Cz. Kapusta, M. Sikora, H. Štěpánková, V. Chlan, K. Knížek, Z. Jirák
Local surrounding of Mn in LaMn1-xCoxO3 compounds by means of EXAFS on Mn-K
J. Magn. Magn. Mater. 322 (2010) 1198
- 1200.
-
M. Veverka, P. Veverka, Z. Jirák, O. Kaman, K. Knížek, M. Maryško, E. Pollert, K. Závěta
Synthesis and magnetic properties of Co1-xZnxFe2O4+γ nanoparticles as materials for magnetic fluid hyperthermia
J. Magn. Magn. Mater. 322 (2010) 2386
- 2389.
-
K. Knížek, J. Hejtmánek, Z. Jirák, P. Tomeš, P. Henry, G. André
Neutron diffraction and heat capacity studies of PrCoO3 and NdCoO3
Phys. Rev. B 79 (2009) 134103(1)
- 134103(7).
-
K. Knížek, Z. Jirák, J. Hejtmánek, P. Novák, Wei Ku,
GGA+U calculations of correlated spin excitations in LaCoO3
Phys. Rev. B 79 (2009) 014430(1)
- 014430(8).
-
D. P. Kozlenko, Z. Jirák, N. O. Golosova, and B. N. Kozlenko
Magnetic ground state and the spin-state transitions in YBaCo2O5.5
Eur. Phys. J. B 70 (2009) 327
- 334.
-
M. Maryško, M. M. Savosta, Z. Jirák, P. Novák
Anomalous temperature dependence of the magnetization in La0.84Sr0.16 MnO3
J. Appl. Phys. 105 (2009) 07D716
- 07D718.
-
J. Hejtmánek, Z. Jirák, K. Knížek, M. Maryško, M. Veverka, C. Autret
Valence and spin states in perovskites LaCo0.95M0.05O3 (M = Mg, Ga, Ti)
J. Magn. Magn. Mater. 320 (2008) 92
- 95.
-
J. Hejtmánek, K. Knížek, M. Maryško, Z. Jirák, D. Sedmidubský, Z. Sofer, V. Peřina, H. Hardtdegen, C. Buchal
On the magnetic properties of Gd implanted GAN
J. Appl. Phys. 103 (2008) 07D107(1)
- 07D107(3).
-
Z. Jirák, J. Hejtmánek, K. Knížek, M. Veverka
Electrical resistivity and thermopower measurements of the hole- and electron-doped cobaltites LnCoO3
Phys. Rev. B 78 (2008) 014432(1)
- 014432(8).
-
K. Knížek, Z. Jirák, J. Hejtmánek, P. Henry, G. André
Structural anomalies, spin transitions and charge disproportionation in LnCoO3
J. Appl. Phys. 103 (2008) 07B703(1)
- 07B703(3).
-
M. Maryško, Z. Jirák
Magnetization Study of the AFM-FM Coexistence in the Manganite System Pr0.5 Ca0.5-x Srx MnO 3
Acta Phys. Polon. A 113 (2008) 143
- 146.
-
V. Procházka, H. Štěpánková, B. Sedlák, Cz. Kapusta, K. Knížek, Z. Jirák, J. Englich, R. Řezníček
NMR study of LaMn1-xCoxO3 perovskites
J. Magn. Magn. Mater. 320 (2008) 12
- 15.
-
D. Rybicki, Cz. Kapusta, W. Tokarz, H. Štepánková, V. Procházka, J. Haase, Z. Jirák, D. T. Adroja, J. F. Mitchell
55Mn nuclear magnetic resonance study of highly Sr-doped La2-2xSr1+2xMn2O7 (x=0.5-0.8)
Phys. Rev. B 78 (2008) 184428(1)
- 184428(8).
-
C. Autret-Lambert, Z. Jirák, M. Gervais, N. Poirot, F. Gervais, N. Raimboux, P. Simon, F. Bourée, G. André
Electron spin resonance and neutron diffraction studies of Nd0.5-xPrxSr0.5MnO3 (x = 0.125, 0.25)
Chem. Mater. 19 (2007) 5222
- 5229.
-
A. Chichev, M. Dlouhá, S. Vratislav, J. Hejtmánek, Z. Jirák, K. Knížek, M. Maryško
Neutron diffraction study of Pr0.5Ca0.5CoO3-\gamma (γ=0 and 0.07)
Z. Kristallogr. 26 (2007) 435
- 440.
-
A. Chichev, J. Hejtmánek, Z. Jirák, K. Knížek, M. Maryško, M. Dlouhá, S. Vratislav
The low-temperature phase separation in Pr0.5Ca0.5CoO3
J. Magn. Magn. Mater. 316 (2007) e728
-
D. P. Kozlenko, L. S. Dubrovinsky, Z. Jirák, B. N. Savenko, C. Martin, S. Vratislav
Pressure-induced antiferromagnetism and compression anisotropy in Pr0.52Sr0.48MnO3
Phys. Rev. B 76 (2007) 094408(1)
- 094408(6).
-
D. P. Kozlenko, N. O. Golosova, Z. Jirák, L. S. Dubrovinsky, B. N. Savenko, M. G. Tucker, Y. Le Godec, and V. P. Glazkov
Temperature and pressure-driven spin-state transitions in LaCoO3
Phys. Rev. B 75 (2007) 064422(1)
- 064422(10).
-
M. Miclau, J. Hejtmánek, R. Retoux, K. Knížek, Z. Jirák, R. Fresard, A. Maignan, S. Hebert, M. Hervieu, and C. Martin
Structural and Magnetic Transitions in CaMn1-xWxO3
Chem. Mater. 19 (2007) 4243
- 4251.
-
V. Procházka, Cz. Kapusta, M. Sikora, D. Zajac, K. Knížek, Z. Jirák, H. Štěpánková
EXAFS study of LaMn1-xCoxO3 compounds
J. Magn. Magn. Mater. 310 (2007) e197
-
V. Chichev , M. Dlouhá , S. Vratislav , K. Knížek , J. Hejtmánek , M. Maryško , M. Veverka , Z. Jirák , O. Golosova , P. Kozlenko , and N. Savenko
Structural, magnetic, and transport properties of the single-layered perovskites La2-xSrxCoO4 (x=1.0-1.4)
Phys. Rev. B 74 (2006) 134414(1)
- 134414(8).
-
M. Dlouhá, S. Vratislav, A. Chichev, Z. Jirák
Neutron difraction study of layered perovskite La0.6Sr1.4CoO4
Acta Phys. Slov. 56 (2006) 181
- 184.
-
K. Knížek , Z. Jirák , J. Hejtmánek , and P. Novák
Character of the excited state of the Co3+ ion in LaCoO3
J. Phys.-Condens. Mat. 18 (2006) 3285
- 3297.
-
K. Knížek , Z. Jirák , J. Hejtmánek , M. Veverka , M. Maryško , C. Hauback , and H. Fjellvag
Structure and physical properties of YCoO3 at temperatures up to 1000 K
Phys. Rev. B 73 (2006) 214443(1)
- 214443(6).
-
P. Kozlenko , V. Ovsyannikov , V. Shchennikov , Z. Jirák , and N. Savenko
Thermoelectric properties of the Pr0.8Na0.2MnO3 manganite at ultrahigh pressures of up to 20 GPa
Phys. Solid State 48 (2006) 1741
- 1745.
-
D. Rybicki, M. Sikora, Cz. Kapusta, P. C. Riedi, Z. Jirák, K. Knížek, M. Maryško, E. Pollert, P. Veverka
A 55Mn NMR study of the La0.75Sr0.25MnO3 nanoparticles
phys. status solidi c 3 (2006) 155
- 158.
-
M. Sikora , C. Kapusta , K. Knížek , Z. Jirák , C. Autret , M. Borowiec , J. Oates , V. Procházka , D. Rybicki , and D. Zajac
X-ray absorption near-edge spectroscopy study of Mn and Co valence states in LaMn1-xCoxO3 (x=0-1)
Phys. Rev. B 73 (2006) 94426(1)
- 94426(5).
-
C. Autret, J. Hejtmánek, K. Knížek, M. Maryško, Z. Jirák, M. Dlouhá and S. Vratislav
Electric transport and magnetic properties of perovskites LaMn1-xCoxO3 up to 900 K
J. Phys.-Condens. Mat. 17 (2005) 1601
- 1616.
-
K. Knizek , Z. Jirak, J. Hejtmanek, M. Veverka, M. Marysko, G. Maris, T. M. Palstra
Structural anomalies associated with the electronic and spin transitions in LnCoO(3)
Eur. Phys. J. B 47 (2005) 213
- 220.
-
K. Knizek , P. Novak , and Z. Jirak
Spin state of LaCoO3: Dependence on CoO6 octahedra geometry
Phys. Rev. B 71 (2005) 54420(1)
- 54420(6).
-
C. Yaicle , F. Fauth , C. Martin , R. Retoux , Z. Jirak , M. Hervieu , B. Raveau , and A. Maignan
Pr0.5Ca0.5Mn0.97Ga0.03O3, a strongly strained system due to the coexistence of two orbital ordered phases at low temperature
J. Solid State Chem. 178 (2005) 1652
- 1660.
-
C. Autret , C. Martin , M. Hervieu , A. Maignan , B. Raveau , G. Andre , F. Bouree , and Z. Jirak
From A-type antiferromagnetism to ferromagnetism in half-doped perovskite manganites
J. Magn. Magn. Mater. 270 (2004) 194
- 202.
-
C. Autret , C. Martin , R. Retoux , A. Maignan , B. Raveau , G. Andre , F. Bouree , and Z. Jirak
Coexistence of ferromagnetism and antiferromagnetism in the L0.08Ca1.92MnO4 series
J. Magn. Magn. Mater. 284 (2004) 172
- 180.
-
J. Hejtmanek , Z. Jirak , K. Knizek , M. Marysko , M. Veverka , and H. Fujishiro
Magnetism, structure and transport of Y1-xCaxCoO3 and La1-xBaxCoO3
J. Magn. Magn. Mater. 272 (2004) E283
-
J. Hejtmanek , Z. Jirak , K. Knizek , E. Pollert , C. Martin , and A. Maignan
Phase competition in Pr0.8-xLaxNa0.2Mn1-yMeyO3
J. Magn. Magn. Mater. 272 (2004) E287
-
Z. Jirák, J. Hejtmánek, K. Knížek, S. Krupička, M. Maryško
Effect of Cr doping in charge ordered Y1-xCaxMnO3 (x~0.5)
J. Magn. Magn. Mater. 272-276 (2004) E1029
-
K. Knížek, J. Hejtmánek, Z. Jirák, C. Martin, M. Hervieu, B. Raveau, G. André, F. Bourée
Structure, magnetism and transport properties of Pr1-xSrxMnO3 (x = 0.45 - 0.75) up to 1200 K
Chem. Mater. 16 (2004) 1104
- 1110.
-
K. Knizek , Z. Jirak , J. Hejtmanek , M. Marysko , C. Martin , A. Maignan , and M. Hervieu
The nanoscopic separation of magnetic phases in Cr-doped manganites Pr0.44Sr0.56MnO3
J. Magn. Magn. Mater. 272 (2004) E1085
-
P. Kozlenko , P. Glazkov , Z. Jirak , and N. Savenko
High pressure effects on the crystal and magnetic structure of Pr1-xSrxMnO3 manganites (x=0.5-0.56)
J. Phys.-Condes. Matter 16 (2004) 2381 - 2394
-
P. Kozlenko , Z. Jirak , N. Goncharenko , and N. Savenko
Suppression of the charge Pr0.75Na0.25MnO3 at high ordered state in pressure
J. Phys.-Condes. Matter 16 (2004) 5883 - 5895
-
M. Marysko and Z. Jirak
Magnetic susceptibility of a two phase manganite Pr0.925Na0.075MnO3
J. Magn. Magn. Mater. 272 (2004) E1025
-
E. Pollert , J. Hejtmanek , Z. Jirak , K. Knizek , M. Marysko , P. Doumerc , C. Grenier , and J. Etourneau
Influence of the structure on electric and magnetic properties of La0.8Na0.2Mn1-xCoxO3 perovskites
J. Solid State Chem. 177 (2004) 4564
- 4568.
-
D. Sedmidubsky , Z. Jirak , J. Hejtmanek , and M. Marysko
Mn-site doped Y1-xCaxMnO3 (x=0.3-0.4) - from spin glass to FM cluster formation
J. Magn. Magn. Mater. 272-76 (2004) 1323
- 1324.
-
J. Hejtmanek , K. Knizek , Z. Jirak , M. Hervieu , C. Martin , M. Nevriva , and P. Beran
Ordering phenomena and transport properties of Bi1/2Sr1/2MnO3 single crystals
J. Appl. Phys. 93 (2003) 7370
- 7372.
-
Z. Jirak , J. Hejtmanek , K. Knizek , M. Marysko , C. Martin , A. Maignan , and M. Hervieu
Magnetoresistive behavior of Cr-doped manganites Pr0.44Sr0.56MnO3
J. Appl. Phys. 93 (2003) 8083
- 8085.
-
P. Kozlenko , P. Glazkov , Z. Jirak , and N. Savenko
Structural study of Pr0.8Na0.2MnO3 at high pressure
J. Magn. Magn. Mater. 267 (2003) 120
- 126.
-
E. Pollert , J. Hejtmanek , Z. Jirak , K. Knizek , and M. Marysko
Influence of Co doping on properties of Pr0.8Na0.2Mn((1-y))CoyO3 perovskites
J. Solid State Chem. 174 (2003) 466
- 470.
-
M. Savosta , P. Novak , and Z. Jirak
Charge density wave in La0.84Sr0.16MnO3 revealed by Mn-55 nuclear magnetic resonance
Phys. Rev. B 67 (2003) 100411(1)
- 100411(4).
-
C. Yaicle , C. Martin , Z. Jirak , F. Fauth , G. Andre , E. Suard , A. Maignan , V. Hardy , R. Retoux , M. Hervieu , S. Hebert , B. Raveau , C. Simon , D. Saurel , A. Brulet , and F. Bouree
Neutron scattering evidence for magnetic-field-driven abrupt magnetic and structural transitions in a phase-separated manganite
Phys. Rev. B 68 (2003) 224412(1)
- 224412(8).
-
M. Dlouhá, S. Vratislav, Z. Jirák, J. Hejtmánek, K. Knížek, D. Sedmidubský
Structure and magnetic order in Y1-xCaxMnO3 (x = 0.3 and 0.5)
Appl. Phys. A-Mater. 74 (2002) S673
-
J. Hejtmanek , Z. Jirak , E. Pollert , D. Sedmidubsky , A. Strejc , C. Martin , A. Maignan , and V. Hardy
Two dimensional metallic conductivity in Pr1-xSrxMnO3 antiferromagnets
J. Appl. Phys. 91 (2002) 8275
- 8277.
-
J. Hejtmanek , E. Pollert , Z. Jirak , D. Sedmidubsky , A. Strejc , A. Maignan , C. Martin , V. Hardy , R. Kuzel , and Y. Tomioka
Magnetism and transport in Pr1-xSrxMnO3 single crystals (0.48 <= x <= 0.57)
Phys. Rev. B 66 (2002) 14426(1)
- 14426(8).
-
Z. Jirak , J. Hejtmanek , K. Knizek , M. Marysko , E. Pollert , M. Dlouha , S. Vratislav , R. Kuzel , and M. Hervieu
Structure and magnetism in the Pr1-xNaxMnO3 perovskites (0 <= x <= 0.2)
J. Magn. Magn. Mater. 250 (2002) 275
- 287.
-
Z. Jirak , C. Martin , M. Hervieu , and J. Hejtmanek
Charge and spin configurations in Pr1-xCaxMnO3 (x=0.5-0.75)
Appl. Phys. A-Mater. Sci. Process. 74 (2002) S1755 - S1757
-
E. Pollert , Z. Jirak , J. Hejtmanek , A. Strejc , R. Kuzel , and V. Hardy
Detailed study of the structural and magnetic transitions in Pr1-xSrxMnO3 single crystals (0.48 <= x <= 0.57)
J. Magn. Magn. Mater. 246 (2002) 290
- 296.
-
T. Satoh , Y. Kikuchi , K. Miyano , E. Pollert , J. Hejtmanek , and Z. Jirak
Irreversible photoinduced insulator-metal transition in charge ordered Pr0.75Na0.25MnO3
Phase Transit. 75 (2002) 935 - 940
-
T. Satoh , Y. Kikuchi , K. Miyano , E. Pollert , J. Hejtmanek , and Z. Jirak
Irreversible photoinduced insulator-metal transition in the Na-doped manganite Pr0.75Na0.25MnO3
Phys. Rev. B 65 (2002) 125103(1)
- 125103(4).
-
M. Savosta , A. Borodin , M. Marysko , Z. Jirak , J. Hejtmanek , and P. Novak
Ferromagnetic-antiferromagnetic transition in Pr0.51Sr0.49MnO3 manganite
Phys. Rev. B 65 (2002) 224418(1)
- 224418(4).
-
D. Sedmidubsky , J. Hejtmanek , M. Marysko , Z. Jirak , V. Hardy , and C. Martin
Spin glass properties of Y0.7Ca0.3MnO3 and Th0.35Ba0.37Ca0.28MnO3
J. Appl. Phys. 91 (2002) 8260
- 8262.
-
J. Hejtmánek, Z. Jirák, J. Šebek, A. Strejc, M. Hervieu
Magnetic phase diagram of the charge ordered manganite Pr0.8Na0.2MnO3
J. Appl. Phys. 89 (2001) 7413
- 7415.
-
Z. Jirak , J. Hejtmanek , E. Pollert , C. Martin , A. Maignan , B. Raveau , M. Savosta , Y. Tomioka , and Y. Tokura
Magnetic ground states in Pr1-xSrxMnO3 (x=0.48-0.75)
J. Appl. Phys. 89 (2001) 7404
- 7406.
-
S. Krupicka , Z. Jirak , J. Hejtmanek , M. Marysko , P. Novak , M. Savosta , and R. Sonntag
Phase separation in structural and magnetic transitions in Pr0.5Ca0.5-xSrxMnO3 (x=0.15 and 0.3)
J. Phys.-Condes. Matter 13 (2001) 6813 - 6834
-
M. Marysko , Z. Jirak , M. Savosta , E. Pollert , Y. Tomioka , and Y. Tokura
Magnetic phase transitions of Pr0.65Ca0.21Sr0.14MnO3 and Pr0.65Ba0.35MnO3 single crystals
J. Magn. Magn. Mater. 226 (2001) 592
- 593.
-
Z. Jirak , F. Damay , M. Hervieu , C. Martin , B. Raveau , G. Andre , and F. Bouree
Magnetism and charge ordering in Pr0.5CaxSr0.5-xMnO3 (x=0.09 and 0.5)
Phys. Rev. B 61 (2000) 1181
- 1188.
-
Z. Jirak , J. Hejtmanek , K. Knizek , M. Marysko , V. Sima , and R. Sonntag
Ferromagnetic-antiferromagnetic transition in tetragonal La0.50Sr0.50MnO3
J. Magn. Magn. Mater. 217 (2000) 113
- 119.
-
C. Martin , A. Maignan , M. Hervieu , B. Raveau , Z. Jirak , M. Savosta , A. Kurbakov , V. Trounov , G. Andre , and F. Bouree
Structural study of the electron-doped manganites Sm0.1Ca0.9MnO3 and Pr0.1Sr0.9MnO3: Evidence of phase separation
Phys. Rev. B 62 (2000) 6442
- 6449.
-
M. Savosta , J. Hejtmanek , Z. Jirak , M. Marysko , P. Novak , Y. Tomioka , and Y. Tokura
Magnetic and transport properties of Pr0.65Ca0.21Sr0.14MnO3 and Pr0.65Ba0.35MnO3 single crystals
Phys. Rev. B 61 (2000) 6896
- 6901.
-
M. Savosta , S. Karnachev , S. Krupicka , J. Hejtmanek , Z. Jirak , M. Marysko , and P. Novak
NMR evidence of the magnetic phase separation in Pr0.5Ca0.2Sr0.3MnO3 manganite
Phys. Rev. B 62 (2000) 545
- 549.
-
M. Savosta , P. Novak , M. Marysko , Z. Jirak , J. Hejtmanek , J. Englich , J. Kohout , C. Martin , and B. Raveau
Coexistence of antiferromagnetism and ferromagnetism in Ca1-xPrxMnO3 (x <= 0.1) manganites
Phys. Rev. B 62 (2000) 9532
- 9537.
-
S. Krupicka , M. Marysko , Z. Jirak , and J. Hejtmanek
Details of structural and magnetic transitions in Pr0.5Ca0.5-xSrxMnO3 perovskites
J. Magn. Magn. Mater. 206 (1999) 45
- 67.
-
C. Martin , A. Maignan , M. Hervieu , B. Raveau , Z. Jirak , A. Kurbakov , V. Trounov , G. Andre , and F. Bouree
Two C-type antiferromagnets with different magnetoresistive properties: Sm0.15Ca0.85MnO3 and Pr0.15Sr0.85MnO3
J. Magn. Magn. Mater. 205 (1999) 184
- 198.
-
M. Dlouha , S. Vratislav , and Z. Jirak
A neutron diffraction study of the Pr(1-x)(3+)A(x)(+)Mn(1-2x)(3+)Mn(2x)(4+)O(3) (a=K, Na) perovskites
Physica B 241 (1997) 424
- 426.
-
Z. Jirak , J. Hejtmanek , E. Pollert , M. Marysko , M. Dlouha , and S. Vratislav
Canted structures in the Mn3+/Mn4+ perovskites
J. Appl. Phys. 81 (1997) 5790
- 5792.
-
S. Vratislav , M. Dlouha , J. Hejtmanek , Z. Jirak , and K. Knizek
Structure properties and oxygen content in Y0.6Ca0.2Ba2Cu3Oy (y=6.03-6.89) by neutron diffraction
Physica B 234 (1997) 928
- 930.
-
J. Hejtmanek , Z. Jirak , K. Knizek , M. Dlouha , and S. Vratislav
Oxygen content and superconductivity in Y0.8Ca0.2Ba2Cu3Oy (y=6.03-6.89)
Phys. Rev. B 54 (1996) 16226
- 16233.