Zdeněk Jirák

Publications:

  1. 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).

  2. 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).

  3. 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).

  4. 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.

  5. 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).

  6. 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.

  7. 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.

  8. 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.

  9. 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).

  10. 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.

  11. 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).

  12. 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).

  13. 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).

  14. 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).

  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.

  16. 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.

  17. 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.

  18. 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).

  19. 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).

  20. 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).

  21. 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).

  22. 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).

  23. 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).

  24. 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.

  25. 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).

  26. 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).

  27. 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).

  28. 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.

  29. 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.

  30. 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).

  31. 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.

  32. 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).

  33. 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.

  34. 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).

  35. 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).

  36. 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).

  37. 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).

  38. 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.

  39. 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).

  40. 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).

  41. 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.

  42. 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.

  43. 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).

  44. 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).

  45. 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).

  46. 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).

  47. 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).

  48. 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).

  49. 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.

  50. 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).

  51. 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).

  52. A. I. Beskrovnyy and Z. Jirák
    Structural modulation in Bi2Sr2Ca0.4Y0.6Cu2O8+δ
    J. Phys.: Conf. Ser. 340 (2012) 012055(1) - 012055(5).

  53. 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).

  54. 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).

  55. 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).

  56. 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).

  57. 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.

  58. 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).

  59. 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.

  60. 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.

  61. 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.

  62. 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.

  63. 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).

  64. 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.

  65. 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).

  66. 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).

  67. 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).

  68. 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.

  69. 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.

  70. 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.

  71. 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.

  72. 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.

  73. 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.

  74. 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).

  75. 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).

  76. 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.

  77. 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.

  78. 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.

  79. 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).

  80. 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).

  81. 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).

  82. 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.

  83. 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.

  84. 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).

  85. 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.

  86. 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.

  87. 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

  88. 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).

  89. 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).

  90. 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.

  91. 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

  92. 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).

  93. M. Dlouhá, S. Vratislav, A. Chichev, Z. Jirák
    Neutron difraction study of layered perovskite La0.6Sr1.4CoO4
    Acta Phys. Slov. 56 (2006) 181 - 184.

  94. 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.

  95. 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).

  96. 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.

  97. 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.

  98. 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).

  99. 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.

  100. 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.

  101. 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).

  102. 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.

  103. 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.

  104. 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.

  105. 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

  106. 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

  107. 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

  108. 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.

  109. 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

  110. 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

  111. 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

  112. M. Marysko and Z. Jirak
    Magnetic susceptibility of a two phase manganite Pr0.925Na0.075MnO3
    J. Magn. Magn. Mater. 272 (2004) E1025

  113. 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.

  114. 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.

  115. 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.

  116. 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.

  117. 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.

  118. 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.

  119. 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).

  120. 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).

  121. 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

  122. 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.

  123. 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).

  124. 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.

  125. 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

  126. 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.

  127. 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

  128. 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).

  129. 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).

  130. 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.

  131. 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.

  132. 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.

  133. 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

  134. 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.

  135. 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.

  136. 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.

  137. 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.

  138. 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.

  139. 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.

  140. 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.

  141. 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.

  142. 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.

  143. 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.

  144. 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.

  145. 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.

  146. 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.