danДоклады Национальной академии наук БеларусиDoklady of the National Academy of Sciences of Belarus1561-83232524-2431The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8323-2018-62-3-268-273dan-517Research ArticleФИЗИКАPHYSICSПРИЧИНА МЕТАМАГНИТНОГО ПЕРЕХОДА В EuMn0,5Co0,5O3REASON FOR A METAMAGNETIC TRANSITION IN EuMn0.5Co0.5O3ТроянчукИ. О.TroyanchukI. O.

Троянчук Игорь Олегович – член-корреспондент, д-р физ.-мат. наук, профессор, заведующий лабораторией. 

ул. П. Бровки, 19, 220072, Минск.

Troyanchuk Igor Olegovich – Corresponding Member, D. Sc. (Physics and Mathematics), Professor, Head of the Laboratory.

19, P. Brovka Str., 220072, Minsk.

troyan@physics.byБушинскийМ. В.BushinskyM. V.

Бушинский Максим Владиславович – канд. физ.-мат. наук, ст. науч. сотрудник. 

ул. П. Бровки, 19, 220072, Минск.

 Bushinsky Maxim Vladislavovich – Ph. D. (Physics and Mathematics), Senior researcher. 

19, P. Brovka Str., 220072, Minsk.

bushinsky@physics.byТерешкоН. В.TereshkoN. V.

Терешко Нина Викторовна – канд. физ.-мат. наук, науч. сотрудник. 

ул. П. Бровки, 19, 220072, Минск.

Tereshko Nina Viktorovna – Ph. D. (Physics and Mathematics), Researcher. 

19, P. Brovka Str., 220072, Minsk.

tereshko@physics.byЧоботА. Н.ChobotA. N.

Чобот Александра Николаевна – канд. физ.-мат. наук, науч. сотрудник. 

ул. П. Бровки, 19, 220072, Минск.

Chobot Aleksandra Nikolaevna – Ph. D. (Physics and Mathematics), Researcher. 

19, P. Brovka Str., 220072, Minsk.

a.n.chobot@tut.byМантыцкаяО. С.MantytskayaO. S.

Мантыцкая Ольга Станиславовна – канд. физ.-мат. наук, науч. сотрудник. 

ул. П. Бровки, 19, 220072, Минск.

Mantytskaya Olga Stanislavovna – Ph. D. (Physics and Mathematics), Researcher. 

19, P. Brovka Str., 220072, Minsk.

mantytskaja@physics.byЧоботГ. М.ChobotG. M.

Чобот Геннадий Михайлович – канд. физ.-мат. наук, доцент.

пр. Независимости, 99, 220023, Минск.

Chobot Gennadii Mihailovich – Ph. D. (Physics and Mathematics), Assistant Professor. 

99, Nezavisimosti Ave., 220023, Minsk.

g.m.chobot@tut.byДобрянскийВ. М.DobryanskyV. M.

Добрянский Валерий Михайлович – д-р техн. наук, профессор. 

пр. Независимости, 99, 220023, Минск.

Dobryansky Valerij Mihailovich – D. Sc. (Engineering), Professor. 

99, Nezavisimosti Ave., 220023, Minsk.

dobryana1@mail.ruПастушонокС. Н.PastushonokS. N.

Пастушонок Софья Николаевна – канд. физ.-мат. наук, доцент. 

пр. Независимости, 220, 220057, Минск.

Pastushonok Sofija Nikolaevna – Ph. D. (Physics and Mathematics), Assistant Professor. 

220, Nezavisimosti Ave., 220057, Minsk.

sn195333@gmail.comНПЦ НАН Беларуси по материаловедению.Scientific and Practical Materials Research Centre of the National Academy of Sciences of Belarus.Белорусский государственный аграрный технический университет.Belarusian State Agrarian Technical University.Военная академия Республики Беларусь.Military Academy of the Republic of Belarus.201828062018623268273Copyright © Троянчук И.О., Бушинский М.В., Терешко Н.В., Чобот А.Н., Мантыцкая О.С., Чобот Г.М., Добрянский В.М., Пастушонок С.Н., 20182018Троянчук И.О., Бушинский М.В., Терешко Н.В., Чобот А.Н., Мантыцкая О.С., Чобот Г.М., Добрянский В.М., Пастушонок С.Н.Troyanchuk I.O., Bushinsky M.V., Tereshko N.V., Chobot A.N., Mantytskaya O.S., Chobot G.M., Dobryansky V.M., Pastushonok S.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://doklady.belnauka.by/jour/article/view/517

Исследованы магнитные свойства перовскита EuMn0,5Co0,5O3, полученного при различных условиях синтеза. Показано, что образец, полученный при 1500 °С, проявляет метамагнитный переход, тогда как у образца, полученного при 1200 °С, наблюдалась полевая зависимость намагниченности, характерная для ферромагнетиков. Оба образца имеют температуру Кюри TC = 123 К и приблизительно равную намагниченность в больших магнитных полях. Метамагнетизм связан с переходом из неколлинеарной в коллинеарную магнитную фазу, тогда как наличие кластеров с упорядочением ионов Co2+ и Mn4+ ведет к ферромагнетизму. Неколлинеарная фаза образуется вследствие конкуренции положительных Co2+–Mn4+ и отрицательных Mn4+–Mn4+, Co2+–Co2+ взаимодействий, а также наличия большой магнитной анизотропии.

The magnetic properties of perovskite EuMn0.5Co0.5O3, obtained under different synthesis conditions, have been studied. It is shown that the sample obtained at 1500 °C exhibits a metamagnetic transition, whereas in the sample obtained at 1200 °C, the field dependence of magnetization as in a ferromagnet was observed. The both samples have TC = 123 K and approximately equal to magnetization in large magnetic fields. Metamagnetism is associated with a transition from a noncollinear to a collinear magnetic phase, whereas the presence of clusters with the ordering of Co2+ and Mn4+ ions leads to ferromagnetism. The noncollinear phase is formed due to the competition of positive Co2+–Mn4+ and negative Mn4+–Mn4+, Co2+–Co2+ interactions and due to large magnetic anisotropy.

обменное взаимодействиенамагниченностьфазовые превращениямагнитные материалыexchange interactionsmagnetizationphase transitionsmagnetic materialsReferencesCoye, J. M. D. Mixed-valence manganites / J. M. D. Coye., M. Viret, S. von Molnár // Advances in Physics. – 1999. – Vol. 48, N 2. – P. 167–293. https://doi.org/10.1080/000187399243455Coye J. M. D., Viret M., von Molnár S. Mixed-valence manganites. Advances in Physics, 1999, vol. 48, no. 2, pp. 167– 293. https://doi.org/10.1080/000187399243455Jonker, G. H. Ferromagnetic compounds of manganese with perovskite structure / G. H. Jonker, J. H. van Santen // Physica. – 1950. – Vol. 16, N 3. – P. 337–349. https://doi.org/10.1016/0031-8914(50)90033-4Jonker G. H., Van Santen J. H. Ferromagnetic compounds of manganese with perovskite structure. Physica, 1950, vol. 16, no. 3, pp. 337–349. https://doi.org/10.1016/0031-8914(50)90033-4Relationship between crystal symmetry and magnetic properties of ionic compounds containing Mn3+ / J. B. Goodenough [et al.] // Phys. Rev. – 1961. – Vol. 124, N 2. – P. 373–384. https://doi.org/10.1103/physrev.124.373Goodenough J. B., Wold A., Arnott R. J., Menyuk N. Relationship between crystal symmetry and magnetic properties of ionic compounds containing Mn3+. Physical Review, 1961, vol. 124, no. 2, pp. 373–384. https://doi.org/10.1103/physrev.124.373Magnetic interaction in Mg, Ti, Nb doped manganites / I. O. Troyanchuk [et al.] // Eur. Phys. J. B. – 2002. – Vol. 28, N 1. – P. 75–80. https://doi.org/10.1140/epjb/e2002-00202-2Troyanchuk I. O., Bushinsky M. V., Szymczak H., Bärner K., Maignan A. Magnetic interaction in Mg, Ti, Nb doped manganites. The European Physical Journal B – Condensed Matter, 2002, vol. 28, no. 1, pp. 75–80. https://doi.org/10.1140/epjb/e2002-00202-2Park, J.-H. Double-exchange ferromagnetism in La(Mn1–xCox)O3 / J.-H. Park, S.-W. Cheong, C. T. Chen // Phys. Rev. B. – 1997. – Vol. 55, N 17. – P. 11072–11075. https://doi.org/10.1103/physrevb.55.11072Park J.-H., Cheong S.-W., Chen C. T. Double-exchange ferromagnetism in La(Mn1–xCox)O3. Physical Review B, 1997, vol. 55, no. 17, pp. 11072–11075. https://doi.org/10.1103/physrevb.55.11072Double-exchange ferromagnetism and magnetoresistance in LaMn1–xCuxO3 (x ≤ 0.3) / Y. Sun [et al.] // Appl. Phys. Lett. – 2000. – Vol. 77, N 17. – P. 2734–2736. https://doi.org/10.1063/1.1320021Sun Y., Xu X., Tong W., Zhang Y. Double-exchange ferromagnetism and magnetoresistance in LaMn1–xCuxO3 (x ≤ 0.3). Applied Physics Letters, 2000, vol. 77, no. 17, pp. 2734–2736. https://doi.org/10.1063/1.1320021Blasse, G. Ferromagnetic interactions in non-metallic perovskites / G. Blasse // J. Phys. Chem. Solids. – 1965. – Vol. 26, N 12. – P. 1969–1971. https://doi.org/10.1016/0022-3697(65)90231-3Blasse G. Ferromagnetic interactions in non-metallic perovskites. Journal of Physics and Chemistry of Solids, 1965, vol. 26, no. 12, pp. 1969–1971. https://doi.org/10.1016/0022-3697(65)90231-3Jonker, G. H. Magnetic and semiconducting properties of perovskites containing manganese and cobalt / G. H. Jonker // J. Appl. Phys. – 1966. – Vol. 37, N 3. – P. 1424–1430. https://doi.org/10.1063/1.1708498Jonker G. H. Magnetic and semiconducting properties of perovskites containing manganese and cobalt. Journal of Applied Physics, 1966, vol. 37, no. 3, pp. 1424–1430. https://doi.org/10.1063/1.1708498Nishimori, N. NMR study on the supertransferred hyperfine magnetic field at 55Mn in ferromagnetic perovskites La(Co1–xMgx)0.5Mn0.5O3 / N. Nishimori, K. Asai, M. Mizoguchi // J. Phys. Soc. Jpn. – 1995. – Vol. 64, N 4. – P. 1326–1333. https://doi.org/10.1143/jpsj.64.1326Nishimori N., Asai K., Mizoguchi M. NMR study on the supertransferred hyperfine magnetic field at 55Mn in ferromagnetic perovskites La(Co1–xMgx)0,5Mn0,5O3. Journal of the Physicas Society of Japan, 1995, vol. 64, no. 4, pp. 1326–1333. https://doi.org/10.1143/jpsj.64.1326Joy, P. A. Spin states of Mn and Co in LaMn0.5Co0.5O3 / P. A. Joy, Y. B. Khollam, S. K. Date // Phys. Rev. B. – 2000. – Vol. 62, N 13. – P. 8608–8610. https://doi.org/10.1103/physrevb.62.8608Joy P. A., Khollam Y. B., Date S. K. Spin states of Mn and Co in LaMn0.5Co0.5O3. Physical Review B, 2000, vol. 62, no. 13, pp. 8608–8610. https://doi.org/10.1103/physrevb.62.8608The origin of ferromagnetism in the two different phases of LaMn0.5Co0.5O3: evidence from x-ray photoelectron spectroscopic studies / V. L. Joseph Joly [et al.] // J. Phys.: Condens. Matter. – 2001. – Vol. 13, N 4. – P. 649–656. https://doi.org/10.1088/0953-8984/13/4/311Joseph Joly V. L., Joy P. A., Date S. K., Gopinath C. S. The origin of ferromagnetism in the two different phases of LaMn0.5Co0.5O3: evidence from x-ray photoelectron spectroscopic studies. Journal of Physics: Condensed Matter, 2001, vol. 13, no. 4, pp. 649–656. https://doi.org/10.1088/0953-8984/13/4/311Joseph Joly, V. L. Effect of R on the magnetic transition temperature of RMn0.5Co0.5O3 / V. L. Joseph Joly, P. A. Joy, S. K. Date // Solid State Commun. – 2002. – Vol. 121, N 4. – P. 219–222. https://doi.org/10.1016/s0038-1098(01)00456-2Joseph Joly V. L., Joy P. A., Date S. K. Effect of R on the magnetic transition temperature of RMn0.5Co0.5O3. Solid State Communications, 2002, vol. 121, no. 4 pp. 219–222. https://doi.org/10.1016/s0038-1098(01)00456-2Joseph Joly, V. L. Synthesis of two different ferromagnetic phases of RMn0.5Co0.5O3 (R = Pr, Nd, Sm) by a low-temperature method / V. L. Joseph Joly, P. A. Joy, S. K. Date // Materials Letters. – 2001. – Vol. 51, N 2. – P. 172–176. https://doi.org/10.1016/s0167-577x(01)00285-3Joseph Joly V. L., Joy P. A., Date S. K. Synthesis of two different ferromagnetic phases of RMn0.5Co0.5O3 (R = Pr, Nd, Sm) by a low-temperature method. Materials Letters, 2001, vol. 51, no. 2, pp. 172–176. https://doi.org/10.1016/s0167-577x(01)00285-3Magnetic phase diagrams of the Ln(Mn1–xCox)O3 (Ln = Eu, Nd, Y) systems / I. O. Troyanchuk [et al.] // J. Appl. Phys. – 2000. – Vol. 88, N 1. – P. 360–367. https://doi.org/10.1063/1.373668Troyanchuk I. O., Khalyavin D. D., Lynn J. W., Erwin R. W., Huang Q., Szymczak H., Szymczak R., Baran M. Magnetic phase diagrams of the Ln(Mn1–xCox)O3 (Ln = Eu, Nd, Y) systems. Journal Applied Physics, 2000, vol. 88, no. 1, pp. 360–367. https://doi.org/10.1063/1.373668Valence states and metamagnetic phase transition in partially B-site-disordered perovskite EuMn0.5Co0.5O3 / A. N. Va siliev [et al.] // Phys. Rev. B. – 2008. – Vol. 77, N 10. – P. 104442-1–104442-5. https://doi.org/10.1103/physrevb.77.104442Vasiliev A. N., Volkova O. S., Lobanovskii L. S., Troyanchuk I. O., Hu Z., Tjeng L. H., Khomskii D. I., Lin H.-J., Chen C. T., Tristan N., Kretzschmar F., Klingeler R., Büchner B. Valence states and metamagnetic phase transition in partially B-site-disordered perovskite EuMn0.5Co0.5O3. Physical Review B, 2008, vol. 77, no. 10, pp. 104442-1–104442-5. https:// doi.org/10.1103/physrevb.77.104442

The authors declare that there are no conflicts of interest present.