Degree of phase transformations in the conditions of polythermal synthesis of SrBaFeMoO6-delta

authors	Kalanda, N; Yarmolich, M; Kutuzau, M; Gurskii, A; Soares, MDT; Andrulevicius, M; Abakeviciene, B; Tamulevicius, S
nationality	International
journal	VACUUM
author keywords	Magnetic metal oxide compound; Double perovsldte; Polythermal synthesis; Differential thermal analysis; Thermogravimetric analysis; Sequence and degree of phase transformations
keywords	ELECTRICAL-PROPERTIES; MAGNETIC-PROPERTIES; PEROVSKITE; MAGNETORESISTANCE; TEMPERATURE
abstract	The sequence of phase transformations during the crystallization of SrBaFeMoO6-delta by the solid-phase technique from a stoichiometric mixture of simple oxides SrCO3 + BaCO3 + 0.5Fe(2)O(3) + MoO3 was studied. It has been established that the synthesis of barium - strontium ferromolybdate proceeds through a series of sequential - parallel stages. It was found that to minimize the effect of intermediate reaction products, it is necessary to use combined synthesis modes. As a result of using combined synthesis modes for annealing for 20 h and T = 1443 K in vacuum of 10(-5) Torr at the pressure of residual oxygen gas 10(-8) Pa, it was possible to obtain a single-phase barium - strontium ferromolybdate compound with superstructural ordering of iron and molybdenum cations.
publisher	PERGAMON-ELSEVIER SCIENCE LTD
issn	0042-207X
year published	2020
volume	174
digital object identifier (doi)	10.1016/j.vacuum.2020.109196
web of science category	Materials Science, Multidisciplinary; Physics, Applied
subject category	Materials Science; Physics
unique article identifier	WOS:000517661000033