mateltechИзвестия высших учебных заведений. Материалы электронной техникиIzvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering1609-35772413-6387MISIS10.17073/1609-3577j.met202401.572mateltech-572Research ArticleМатериаловедение и технология. Магнитные материалыMATERIALS SCIENCE AND TECHNOLOGY. MAGNETIC MATERIALSВлияние состава исходных реагентов на структурные и магнитные свойства Sr1,5La0,5FeMoO6-δInfluence of the composition of the initial reagents on the structural and magnetic properties of Sr1.5La0.5FeMoO6-δhttps://orcid.org/0000-0002-8005-2171ЯрмоличМ. В.YarmolichM. V.

ул. П. Бровки, д. 19, Минск, 220072

Ярмолич Марта Викторовна — канд. физ.-мат. наук, доцент, заведующий отделом криогенных исследований

19 P. Brovka Str., Minsk 220072

Marta V. Yarmolich — Cand. Sci. (Phys.-Math.), Head of Department

yarmolich0901@gmail.comhttps://orcid.org/0000-0001-7679-4968КаландаН. А.KalandaN. A.

ул. П. Бровки, д. 19, Минск, 220072

Каланда Николай Александрович — доктор физ.-мат. наук, доцент, ведущий научный сотрудник

19 P. Brovka Str., Minsk 220072

Nikolay A. Kalanda — Dr. Sci. (Phys.-Math.), Leading Researcher

kalanda@physics.byhttps://orcid.org/0000-0003-1208-5913ПетровА. В.PetrovA. V.

ул. П. Бровки, д. 19, Минск, 220072

Петров Александр Владимирович — канд. физ.-мат. наук, доцент, старший научный сотрудник

19 P. Brovka Str., Minsk 220072

Alexander V. Petrov — Cand. Sci. (Phys.-Math.), Senior Researcher

petrov@physics.byhttps://orcid.org/0000-0003-1047-3007КиселевД. А.KiselevD. A.

Ленинский просп., д. 4, стр. 1, Москва, 119049

Киселев Дмитрий Александрович — канд. физ.-мат. наук, заведующий лабораторией физики оксидных сегнетоэлектриков

4-1 Leninsky Ave., Moscow 119049

Dmitry A. Kiselev — Cand. Sci. (Phys.-Math.), Head of the Laboratory

dm.kiselev@misis.ruhttps://orcid.org/0000-0001-8551-5246ПономареваО. Ю.PonomarevaO. Yu.

ул. Жолио-Кюри, д. 6, Дубна, 141980

Пономарева Ольга Юрьевна — канд. хим. наук, научный сотрудник

6 Joliot-Curie Str., Dubna 141980

Olga Yu. Ponomareva — Cand. Sci. (Chem.), Researcher

ioyu@nf.jinr.ruhttps://orcid.org/0000-0002-7748-5443ВершининаТ. Н.VershininaT. N.

ул. Жолио-Кюри, д. 6, Дубна, 141980

Вершинина Татьяна Николаевна — канд. физ.-мат. наук, старший научный сотрудник

6 Joliot-Curie Str., Dubna 141980

Tatiana N. Vershinina — Cand. Sci. (Phys.-Math.), Senior Researcher

vershinina@nf.jinr.ruБосакН. А.BosakN. A.

просп. Независимости, д. 68-2, Минск, 220072

Босак Николай Александрович — канд. физ.-мат. наук, ведущий научный сотрудник

68-2 Nezavisimosti Ave., Minsk 220072

Nikolay A. Bosak — Cand. Sci. (Phys.-Math.), Leading Researcher

n.bosak@ifanbel.bas-net.byhttps://orcid.org/0000-0002-6317-2112ЛазарукС. К.LazaroukS. K.

ул. П. Бровки, д. 6, Минск, 220013

Лазарук Сергей Константинович — доктор физ.-мат. наук, заведующий лабораторией

6 P. Brovka Str., Minsk 220013

Serguei K. Lazarouk — Dr. Sci. (Phys.-Math.), Head of the Laboratory

serg@nano.bsuir.edu.byhttps://orcid.org/0000-0003-3611-5531SangaaD.SangaaD.

54B Peace Ave., Ulaanbaatar 13330

Sangaa Deleg — Dr. Sci. (Phys.-Math.), Senior Researcher

54B Peace Ave., Ulaanbaatar 13330

Deleg Sangaa — Dr. Sci. (Phys.-Math.), Senior Researcher

dsangaa@gmail.comhttps://orcid.org/0009-0005-6169-5293MunkhtsetsegS.MunkhtsetsegS.

P.O.Box 46A/523, Sukhbaatar District, Ulaanbaatar 14201

Munkhtsetseg Sambuu — PhD, Senior Lecturer

P.O.Box 46A/523, Sukhbaatar District, Ulaanbaatar 14201

Sambuu Munkhtsetseg — PhD, Senior Lecturer

munkhtsetseg_s@num.edu.mnГосударственное научно-производственное объединение «Научно-практический центр Национальной академии наук Беларуси по материаловедению»БеларусьScientific-Practical Materials Research Centre of the National Academy of Sciences of BelarusBelarusНациональный исследовательский технологический университет «МИСИС»РоссияNational University of Science and Technology MISISRussian FederationОбъединенный институт ядерных исследованийРоссияJoint Institute for Nuclear ResearchRussian FederationИнститут физики имени Б.И. Степанова Национальной академии наук БеларусиБеларусьB.I. Stepanov Institute of Physics of the National Academy of Sciences of BelarusBelarusБелорусский государственный университет информатики и радиоэлектроникиБеларусьBelarusian State University of Informatics and RadioelectronicsBelarusInstitute of Physics and Technology of the Mongolian Academy of SciencesМонголияInstitute of Physics and Technology of the Mongolian Academy of SciencesMongoliaNational University of MongoliaМонголияNational University of MongoliaMongolia202408052024272107116Copyright © Ярмолич М.В., Каланда Н.А., Петров А.В., Киселев Д.А., Пономарева О.Ю., Вершинина Т.Н., Босак Н.А., Лазарук С.К., Sangaa D., Munkhtsetseg S., 20242024Ярмолич М.В., Каланда Н.А., Петров А.В., Киселев Д.А., Пономарева О.Ю., Вершинина Т.Н., Босак Н.А., Лазарук С.К., Sangaa D., Munkhtsetseg S.Yarmolich M.V., Kalanda N.A., Petrov A.V., Kiselev D.A., Ponomareva O.Y., Vershinina T.N., Bosak N.A., Lazarouk S.K., Sangaa D., Munkhtsetseg S.This work is licensed under a Creative Commons Attribution 4.0 License.https://met.misis.ru/jour/article/view/572

В настоящей работе приведены исследования изучения фазовых превращений в процессе кристаллизации Sr1,5La0,5FeMoO6-δ твердофазным методом из стехиометрической смеси оксидов MoO3, La2O3, Fe2O3 и SrCO3 и прекурсоров Sr0,5La0,5FeO3 и SrMoO4.

Используя рентгенофазовый и термогравиметрический анализы, изучено влияние режимов синтеза на химические процессы, протекающие при образовании двойного перовскита. Установлено, что синтез ферромолибдата лантана-стронция в смеси оксидов протекает через ряд последовательно-параллельных стадий. На начальном этапе образующийся ферромолибдат лантана-стронция обогащен железом, и его состав изменяется в сторону увеличения содержания молибдена. При повышении температуры увеличивается концентрация двойного перовскита с сохранением вторичной фазы, что указывает на затруднение протекания твердофазных реакций. Для снижения влияния промежуточных продуктов реакции необходимо использовать прекурсоры. Результаты исследования температурных зависимостей степени фазовых превращений позволили оптимизировать комбинированные режимы нагрева. Это позволило получить однофазный порошок Sr1,5La0,5FeMoO6-δ с наличием сверхструктурного упорядочения (82 %) с температурой Кюри 450 К и значением намагниченности 40,9 (А⋅м2)/кг при Т = 77 К в магнитном поле В ≥ 0,86 Тл.

This paper presents investigations of phase transformations during the crystallization of Sr1.5La0.5FeMoO6-δ by the solid-phase method from a stoichiometric mixture of MoO3, La2O3, Fe2O3 and SrCO3 oxides, as well as precursors Sr0.5La0.5FeO3 and SrMoO4. Using the XRD and thermogravimetric analyses, influence of synthesis modes on the chemical processes during the formation of double perovskite was investigated. The synthesis of lanthanum-strontium ferromolybdate involves several series-parallel stages. Initially, the compound is enriched with iron, and its composition shifts towards higher molybdenum content. With increasing temperature, concentration of double perovskite increases while retaining the secondary phase, indicating the difficulty of solid-phase reactions. To reduce the influence of reaction intermediates, precursor materials are recommended. Optimized heating modes facilitated the production of single-phase Sr1.5La0.5FeMoO6-δ powder, exhibiting 82% superstructural ordering. It has presented a Curie temperature of 450 K and a magnetization of 40.9 (A⋅m2)/kg at T = 77 K in B ≥ 0.86 T. 

двойной перовскитферромолибдат лантана-стронцияферримагнетиксверхструктурное упорядочение катионов Fe/Moпоследовательность фазовых превращенийтермогравиметрический анализрентгенофазовый анализнамагниченностьdouble perovskitelanthanum strontium ferromolybdateferrimagneticsuperstructural ordering of Fe/Mo cationssequence of phase transformationsthermogravimetric analysisX-ray phase analysismagnetizationАвторы работы признательны за поддержку данного исследования в рамках проектов БРФФИ № Ф23МЭ-025 и № Ф24МН-009.The authors are grateful for the support of this research within the framework of the BRFFR projects No. F23ME-025 and No. F24MN-009.ReferencesWolf S.A., Awschalom D.D., Buhrman R.A., Daughton J.M., Von Molnar S., Roukes M.L., Chtchelkanova A.Y., Treger D.M. Spintronics: a spin-based electronic vision for the future. Science. 2001; 294(5546): 1488—1495. https://doi.org/10.1126/science.1065389Wolf S.A., Awschalom D.D., Buhrman R.A., Daughton J.M., Von Molnar S., Roukes M.L., Chtchelkanova A.Y., Treger D.M. Spintronics: a spin-based electronic vision for the future. Science. 2001; 294(5546): 1488—1495. https://doi.org/10.1126/science.1065389Zutic I., Fabian J., Das Sarma S. Spintronics: fundamentals and applications. Reviews of Modern Physics. 2004; 76(2): 323—410. https://doi.org/10.1103/RevModPhys.76.323Zutic I., Fabian J., Das Sarma S. Spintronics: fundamentals and applications. Reviews of Modern Physics. 2004; 76(2): 323—410. https://doi.org/10.1103/RevModPhys.76.323Kalanda N., Bobrikov I., Yarmolich M., Kuts V., Huang L., Hwang C., Kim D.-H. Interrelation among superstructural ordering, oxygen nonstoichiometry and lattice strain of double perovskite Sr2FeMoO6-δ materials. Journal of Materials Science. 2021; 56: 11698—11710. https://doi.org/10.1007/s10853-021-06072-0Kalanda N., Bobrikov I., Yarmolich M., Kuts V., Huang L., Hwang C., Kim D.-H. Interrelation among superstructural ordering, oxygen nonstoichiometry and lattice strain of double perovskite Sr2FeMoO6-δ materials. Journal of Materials Science. 2021; 56: 11698—11710. https://doi.org/10.1007/s10853-021-06072-0Jungwirth T., Sinova J., Masek J., Kucera J., MacDonald A.H. Theory of ferromagnetic (III, Mn)V semiconductors. Reviews of Modern Physics. 2006; 78(3): 809—864. https://doi.org/10.1103/RevModPhys.78.809Jungwirth T., Sinova J., Masek J., Kucera J., MacDonald A.H. Theory of ferromagnetic (III, Mn)V semiconductors. Reviews of Modern Physics. 2006; 78(3): 809—864. https://doi.org/10.1103/RevModPhys.78.809Serrate D., DeTeresa J.M., Ibarra M.R. Double perovskites with ferromagnetism above room temperature. Journal of Physics: Condensed Matter. 2007; 19(2): 023201. https://doi.org/10.1088/0953-8984/19/2/023201Serrate D., DeTeresa J.M., Ibarra M.R. Double perovskites with ferromagnetism above room temperature. Journal of Physics: Condensed Matter. 2007; 19(2): 023201. https://doi.org/10.1088/0953-8984/19/2/023201Topwal D., Sarma D.D., Kato H., Tokura Y.,Topwal D., Sarma D.D., Kato H., Tokura Y.,Avignon M. Structural and magnetic properties ofAvignon M. Structural and magnetic properties ofSr2Fe1+xMo1-xO6 (-1 ⩽ x ⩽ 0.25). Physical Review B. 2006; 73(9): 0944191. https://doi.org/10.1103/PhysRevB.73.094419Sr2Fe1+xMo1-xO6 (-1 ⩽ x ⩽ 0.25). Physical Review B. 2006; 73(9): 0944191. https://doi.org/10.1103/PhysRevB.73.094419Karki S.B., Ramezanipour F. Magnetic and electrical properties of BaSrMMoO6 (M = Mn, Fe, Co, and Ni). Materials Today Chemistry. 2019; 13: 25—33. https://doi.org/10.1016/j.mtchem.2019.04.002Karki S.B., Ramezanipour F. Magnetic and electrical properties of BaSrMMoO6 (M = Mn, Fe, Co, and Ni). Materials Today Chemistry. 2019; 13: 25—33. https://doi.org/10.1016/j.mtchem.2019.04.002Balcells L., Navarro J., Bibes M., Roig A., Martinez B., Fontcuberta J. Cationic ordering control of magnetization in Sr2FeMoO6 double perovskite. Applied Physics Letters. 2001; 78(6): 14. https://doi.org/10.1063/1.1346624Balcells L., Navarro J., Bibes M., Roig A., Martinez B., Fontcuberta J. Cationic ordering control of magnetization in Sr2FeMoO6 double perovskite. Applied Physics Letters. 2001; 78(6): 14. https://doi.org/10.1063/1.1346624Allub R., Navarro O., Avignon M., Alascio B. Effect of disorder on the electronic structure of the double perovskite Sr2FeMoO6. Physica B: Condensed Matter. 2002; 320(1–4): 13—17. https://doi.org/10.1016/S0921-4526(02)00608-7Allub R., Navarro O., Avignon M., Alascio B. Effect of disorder on the electronic structure of the double perovskite Sr2FeMoO6. Physica B: Condensed Matter. 2002; 320(1–4): 13—17. https://doi.org/10.1016/S0921-4526(02)00608-7Park B., Han H., Kim J., Kim Y.J., Kim C.S., Lee B.W. Correlation between anti-site disorder and magnetic properties in ordered perovskite Sr2FeMoO6. Journal of Magnetism and Magnetic Materials. 2004; 272–276(Pt 3): 1851—1852. https://doi.org/10.1016/j.jmmm.2003.12.429Park B., Han H., Kim J., Kim Y.J., Kim C.S., Lee B.W. Correlation between anti-site disorder and magnetic properties in ordered perovskite Sr2FeMoO6. Journal of Magnetism and Magnetic Materials. 2004; 272–276(Pt 3): 1851—1852. https://doi.org/10.1016/j.jmmm.2003.12.429Menéndez N., Garcia-Hernandez M., Sanchez D., Tornero J.D., Martinez J.L., Alonso J.A. Charge transfer and disorder in double perovskites. American Chemical Society. 2004; 16(18): 3565—3572. https://doi.org/10.1021/cm049305tMenéndez N., Garcia-Hernandez M., Sanchez D., Tornero J.D., Martinez J.L., Alonso J.A. Charge transfer and disorder in double perovskites. American Chemical Society. 2004; 16(18): 3565—3572. https://doi.org/10.1021/cm049305tSarma D.D. A new class of magnetic materials:Sarma D.D. A new class of magnetic materials:Sr2FeMoO6 and related compounds. Current Opinion in Solid State and Materials Science. 2001; 5(4): 261—268. https://dx.doi.org/10.1016/S1359-0286(01)00014-6Sr2FeMoO6 and related compounds. Current Opinion in Solid State and Materials Science. 2001; 5(4): 261—268. https://dx.doi.org/10.1016/S1359-0286(01)00014-6Szotek Z., Temmerman W.M., Svane A., Petit L., Winter H. Electronic structure of half-metallic double perovskites. Physical Review B. 2003; 68(10): 104411. https://doi.org/10.1103/PhysRevB.68.104411Szotek Z., Temmerman W.M., Svane A., Petit L., Winter H. Electronic structure of half-metallic double perovskites. Physical Review B. 2003; 68(10): 104411. https://doi.org/10.1103/PhysRevB.68.104411Sarma D.D., Mahadevan P., Saha-Dasgupta T., Ray S., Kumar A. Electronic structure of Sr2FeMoO6. Physical Review Letters. 2000; 85(12): 2549—2552. https://doi.org/10.1103/PhysRevLett.85.2549Sarma D.D., Mahadevan P., Saha-Dasgupta T., Ray S., Kumar A. Electronic structure of Sr2FeMoO6. Physical Review Letters. 2000; 85(12): 2549—2552. https://doi.org/10.1103/PhysRevLett.85.2549Navarro J., Frontera C., Balcells LI., Martinez B., Fontcuberta J. Raising the Curie temperature inNavarro J., Frontera C., Balcells LI., Martinez B., Fontcuberta J. Raising the Curie temperature inSr2FeMoO6 double perovskites by electron doping. Physical Review B. 2001; 64(9): 09241. https://doi.org/10.1103/PhysRevB.64.092411Sr2FeMoO6 double perovskites by electron doping. Physical Review B. 2001; 64(9): 09241. https://doi.org/10.1103/PhysRevB.64.092411Zhong W., Wu X.L., Tang N.J., Liu W., Chen W., Au C.T., Du Y.W. Magnetocaloric effect in ordered double-perovskite Ba2FeMoO6 synthesized using wet chemistry. The European Physical Journal B – Condensed Matter and Complex Systems. 2004; 41: 213—217. https://doi.org/10.1140/epjb/e2004-00312-9Zhong W., Wu X.L., Tang N.J., Liu W., Chen W., Au C.T., Du Y.W. Magnetocaloric effect in ordered double-perovskite Ba2FeMoO6 synthesized using wet chemistry. The European Physical Journal B – Condensed Matter and Complex Systems. 2004; 41: 213—217. https://doi.org/10.1140/epjb/e2004-00312-9Zhong W., Tang N.J., Wu X.L., Liu W., Chen W., Jiang H.Y., Du Y.W. Magnetocaloric effect above room temperature in the ordered double-perovskite Ba2Fe1+xMo1-xO6. Journal of Magnetism and Magnetic Materials. 2004; 282: 151—155. https://doi.org/10.1016/j.jmmm.2004.04.036Zhong W., Tang N.J., Wu X.L., Liu W., Chen W., Jiang H.Y., Du Y.W. Magnetocaloric effect above room temperature in the ordered double-perovskite Ba2Fe1+xMo1-xO6. Journal of Magnetism and Magnetic Materials. 2004; 282: 151—155. https://doi.org/10.1016/j.jmmm.2004.04.036Tomioka Y., Okuda T., Okimoto Y., Kumai R., Kobayashi K.-I., Tokura Y. Magnetic and electronic properties of a single crystal of ordered double perovskite Sr2FeMoO6. Physical Review B. 2000; 61(1): 422. https://doi.org/10.1103/PhysRevB.61.422Tomioka Y., Okuda T., Okimoto Y., Kumai R., Kobayashi K.-I., Tokura Y. Magnetic and electronic properties of a single crystal of ordered double perovskite Sr2FeMoO6. Physical Review B. 2000; 61(1): 422. https://doi.org/10.1103/PhysRevB.61.422Dhahri A., Dhahri J., Zemni S., Oumezzine M., Vincent H. Structural, magnetic and magnetocaloric effect in double perovskite Ba2CrMo1-xWxO6. Journal of Alloys and Compounds. 2006; 420(1–2): 15—19. https://doi.org/10.1016/j.jallcom.2005.10.030Dhahri A., Dhahri J., Zemni S., Oumezzine M., Vincent H. Structural, magnetic and magnetocaloric effect in double perovskite Ba2CrMo1-xWxO6. Journal of Alloys and Compounds. 2006; 420(1–2): 15—19. https://doi.org/10.1016/j.jallcom.2005.10.030Moritomo Y., Xu S., Akimoto T., Machida A., Hamada N., Ohoyama K., Nishibori E., Takata M., Sakata M. Electron doping effects in conducting Sr2FeMoO6. Physical Review B. 2000; 62(21): 14224. https://doi.org/10.1103/PhysRevB.62.14224Moritomo Y., Xu S., Akimoto T., Machida A., Hamada N., Ohoyama K., Nishibori E., Takata M., Sakata M. Electron doping effects in conducting Sr2FeMoO6. Physical Review B. 2000; 62(21): 14224. https://doi.org/10.1103/PhysRevB.62.14224Garcia-Hernandez M., Martinez J.L., Martinez-Lope M.J., Casais M.T., Alonso J.A. Finding universal correlations between cationic disorder and low field magnetoresistance in FeMo double perovskite series. Physical Review Letters. 2001; 86(11–12): 2443. https://doi.org/10.1103/PhysRevLett.86.2443Garcia-Hernandez M., Martinez J.L., Martinez-Lope M.J., Casais M.T., Alonso J.A. Finding universal correlations between cationic disorder and low field magnetoresistance in FeMo double perovskite series. Physical Review Letters. 2001; 86(11–12): 2443. https://doi.org/10.1103/PhysRevLett.86.2443Navarro J., Nogues J., Munoz J.S., Fontcuberta J. Antisites and electron-doping effects on the magnetic transition of Sr2FeMoO6 double perovskite. Physical Review B. 2003; 67(17): 174416. https://doi.org/10.1103/PhysRevB.67.174416Navarro J., Nogues J., Munoz J.S., Fontcuberta J. Antisites and electron-doping effects on the magnetic transition of Sr2FeMoO6 double perovskite. Physical Review B. 2003; 67(17): 174416. https://doi.org/10.1103/PhysRevB.67.174416Kahoul A., Aziz A., Colis S., Stoelfer D., Moubah R., Schmerber G., Leuvrey C. Effect of La doping on the properties of Sr2-xLaxFeMoO6 double perovskite. Journal of Applied Physics. 2008; 104(12): 123903. https://doi.org/10.1063/1.3043586Kahoul A., Aziz A., Colis S., Stoelfer D., Moubah R., Schmerber G., Leuvrey C. Effect of La doping on the properties of Sr2-xLaxFeMoO6 double perovskite. Journal of Applied Physics. 2008; 104(12): 123903. https://doi.org/10.1063/1.3043586Jana S., Meneghini C., Sanyal P., Sarkar S., Saha-Dasgupta T., Karis O., Ray S. Signature of an antiferromagnetic metallic ground state in heavily electron-doped Sr2FeMoO6. Physical Review B. 2012; 86(5): 054433. https://doi.org/10.1103/PhysRevB.86.054433Jana S., Meneghini C., Sanyal P., Sarkar S., Saha-Dasgupta T., Karis O., Ray S. Signature of an antiferromagnetic metallic ground state in heavily electron-doped Sr2FeMoO6. Physical Review B. 2012; 86(5): 054433. https://doi.org/10.1103/PhysRevB.86.054433Sanyal P., Das H., Saha-Dasgupta T. Evidence of kinetic-energy-driven antiferromagnetism in double perovskites: a first-principles study of La-doped Sr2FeMoO6. Physical Review B. 2009; 80(22): 224412. https://doi.org/10.1103/PhysRevB.80.224412Sanyal P., Das H., Saha-Dasgupta T. Evidence of kinetic-energy-driven antiferromagnetism in double perovskites: a first-principles study of La-doped Sr2FeMoO6. Physical Review B. 2009; 80(22): 224412. https://doi.org/10.1103/PhysRevB.80.224412Fang, T.-T., Lin J.-C. Formation kineticsFang, T.-T., Lin J.-C. Formation kineticsof Sr2FeMoO6 double perovskite. Journal of Materials Science. 2005; 40(1): 683—686. https://doi.org/10.1007/s10853-005-6307-8of Sr2FeMoO6 double perovskite. Journal of Materials Science. 2005; 40(1): 683—686. https://doi.org/10.1007/s10853-005-6307-8Yarmolich M., Kalanda N., Demyanov S., Terryn H., Ustarroz J., Silibin M., Gorokh G. Influence of synthesis conditions on microstructure and phase transformations of annealed Sr2FeMoO6-x nanopowders formed by the citrate-gel method. Beilstein Journal of. Nanotechnology. 2016; 7: 1202—1207. https://doi.org/10.3762/bjnano.7.111Yarmolich M., Kalanda N., Demyanov S., Terryn H., Ustarroz J., Silibin M., Gorokh G. Influence of synthesis conditions on microstructure and phase transformations of annealed Sr2FeMoO6-x nanopowders formed by the citrate-gel method. Beilstein Journal of. Nanotechnology. 2016; 7: 1202—1207. https://doi.org/10.3762/bjnano.7.111Cernea M., Vasiliu F., Bartha C., Plapcianu C., Merconiu I., Characterization of ferromagnetic double perovskite Sr2FeMoO6 prepared by various methods. Ceramics International. 2014; 40(8 Pt A): 11601—11609. https://doi.org/10.1016/j.ceramint.2014.03.142Cernea M., Vasiliu F., Bartha C., Plapcianu C., Merconiu I., Characterization of ferromagnetic double perovskite Sr2FeMoO6 prepared by various methods. Ceramics International. 2014; 40(8 Pt A): 11601—11609. https://doi.org/10.1016/j.ceramint.2014.03.142Kalanda N.A., Gurskii A.L., Yarmolich M.V., Petrov A.V., Bobrikov I.A., Ivanshina O.Yu., Sumnikov S.V., Maia F., Zhaludkevich A.L., Demyanov S.E. Sequence of phase transformations at the formation of the stronitum chrome-molybdate compound. Modern Electronic Materials. 2019; 5(2): 69—75. https://doi.org/10.3897/j.moem.5.2.50758Kalanda N.A., Gurskii A.L., Yarmolich M.V., Petrov A.V., Bobrikov I.A., Ivanshina O.Yu., Sumnikov S.V., Maia F., Zhaludkevich A.L., Demyanov S.E. Sequence of phase transformations at the formation of the stronitum chrome-molybdate compound. Modern Electronic Materials. 2019; 5(2): 69—75. https://doi.org/10.3897/j.moem.5.2.50758Jurca B., Berthon J., Dragoe N., Berthet P., Influence of successive sintering treatments on high ordered Sr2FeMoO6 double perovskite properties. Journal of Alloys and Compounds. 2009; 474(1–2): 416—423. https://doi.org/10.1016/j.jallcom.2008.06.100Jurca B., Berthon J., Dragoe N., Berthet P., Influence of successive sintering treatments on high ordered Sr2FeMoO6 double perovskite properties. Journal of Alloys and Compounds. 2009; 474(1–2): 416—423. https://doi.org/10.1016/j.jallcom.2008.06.100Kraus W., Nolze G. POWDERCELL – a program for the representation and manipulation of crystal structures and calculation of the resulting X-ray powder patterns. Journal of Applied Crystallography. 1996; 29: 301—303. https://doi.org/10.1107/S0021889895014920Kraus W., Nolze G. POWDERCELL – a program for the representation and manipulation of crystal structures and calculation of the resulting X-ray powder patterns. Journal of Applied Crystallography. 1996; 29: 301—303. https://doi.org/10.1107/S0021889895014920Rodríguez-Carvajal J. Recent developments of the program FULLPROF in Commission on Powder Diffraction (IUCr). Newsletter. 2001; 26: 12—19.Rodríguez-Carvajal J. Recent developments of the program FULLPROF in Commission on Powder Diffraction (IUCr). Newsletter. 2001; 26: 12—19.

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