Open AccessПолучение, структура, диэлектрические и магнитные свойства керамики SrFe-=SUB=-2/3-=/SUB=-W-=SUB=-1/3-=/SUB=-O-=SUB=-3-=/SUB=-
Author(s) -
А. В. Павленко,
A. V. Turik,
Л. А. Шилкина,
С. П. Кубрин,
Ю.B. Русалев,
Л. А. Резниченко,
И. Н. Андрюшина
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.03.45554.263
Subject(s) - tetragonal crystal system , ferrimagnetism , valence (chemistry) , materials science , ceramic , atmospheric temperature range , ferroelectricity , phase transition , sintering , condensed matter physics , phase (matter) , crystallography , mineralogy , dielectric , crystal structure , magnetization , chemistry , metallurgy , magnetic field , thermodynamics , physics , optoelectronics , organic chemistry , quantum mechanics
Polycrystalline samples of SrFe_2/3W_1/3O_3 (SFWO) ceramic were obtained by solid-phase reactions with subsequent sintering using conventional ceramic technology. X-ray diffraction analysis showed that at room temperature, the SFWO ceramic is single-phase and has a perovskite-type structure with tetragonal symmetry and parameters a = 3.941(9) Å, c = 3.955(6) Å, and c/a = 1.0035. In studying the magnetic properties and the Mössbauer effect in SFWO ceramics, it is found that the material is a ferrimagnet, and the iron ions are only in the valence state of Fe^3+. It is suggested that in the temperature range of T = 150–210°C, a smeared phase transition from a cubic (paraelectric) phase to a tetragonal (ferroelectric) phase takes place in SFWO with decreasing temperature.