Open AccessСтруктура и диэлектрические свойства наноструктурированной керамики Bi-=SUB=-1-x-=/SUB=-Sm-=SUB=-x-=/SUB=-FeO-=SUB=-3-=/SUB=-
Author(s) -
С. А. Садыков,
Н. М.-Р. Алиханов,
S. N. Kallaev,
М. Х. Рабаданов,
Д. К. Палчаев,
Zh. Kh. Murlieva,
R. M. Emirov
Publication year - 2019
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2019.11.48413.530
Subject(s) - orthorhombic crystal system , dielectric , crystallite , samarium , multiferroics , materials science , trigonal crystal system , phase (matter) , atmospheric temperature range , diffraction , phase transition , analytical chemistry (journal) , condensed matter physics , crystallography , crystal structure , chemistry , ferroelectricity , thermodynamics , metallurgy , physics , inorganic chemistry , optics , optoelectronics , organic chemistry , chromatography
The structure and dielectric properties of polycrystalline multiferroics of the Bi1-xSmxFeO3 system (x = 0-0.2) are investigated. X-ray diffraction revealed that two phases coexist in the x = 0.1 nanostructured sample: rhombohedral R3c and orthorhombic Pbam. On the temperature dependences of the dielectric constant ε'(T), four anomalies characteristic of phase transformations were found in the temperature range of ~ 180°С, ~ 250°С, ~ 300°С and TN ~ 350°С. It is shown that with increasing samarium concentration, the dielectric constant ε' increases, and tgδ decreases