Mossbauer and dielectric studies of Bi0.6Nd0.4Fe0.5M0.5O3 (M - Mn, Cr) solid solution ceramics fabricated by a high-pressure synthesis

被引：0
|
作者：
Raevski, I. P. [1 ,2 ]
Kubrin, S. P. [1 ,2 ]
Pushkarev, A. V. [3 ]
Olekhnovich, N. M. [3 ]
Radyush, Yu. V. [2 ,3 ]
Raevskaya, S. I. [1 ,2 ]
Titov, V. V. [1 ,2 ]
Malitskaya, M. A. [1 ,2 ]
Shishkina, P. A. [1 ,2 ]
Kolosov, S. I. [1 ,2 ]
机构：
[1] Southern Fed Univ, Phys Res Inst, Rostov Na Donu, Russia
[2] Southern Fed Univ, Fac Phys, Rostov Na Donu, Russia
[3] NAS Belarus, Lab Solid State Phys, Sci Pract Mat Res Ctr, Minsk, BELARUS
来源：
FERROELECTRICS | 2024年 / 618卷 / 06期
关键词：
Ceramics; multiferroics; perovskites; phase transitions; solid solutions; giant dielectric response; high-pressure synthesis; Mossbauer effect; PERMITTIVITY; FE-57;
D O I：
10.1080/00150193.2024.2305585
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Bi0.6Nd0.4Fe0.5M0.5O3 (M - Mn, Cr) compositions with perovskite structure were fabricated by a high-pressure synthesis. Mossbauer studies have shown that doping with Nd does not change substantially Neel temperature values of Bi0.6Nd0.4 Fe0.5M0.5O3 (M - Cr, Mn) compositions. However, the Fe3+ and Mn3+ ions seem to be inhomogeneously distributed in the crystal lattice and form Fe-poor and Fe-rich regions. Similar result was obtained by us earlier for Bi(Fe1-xCrx)O-3 solid solution. Both compositions studied exhibit a giant dielectric response in a wide temperature range. The giant dielectric response seems to be due to the relaxation of electrons or polarons trapped by oxygen vacancies.
引用
收藏
页码：1446 / 1453
页数：8
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