文献类型：期刊文献

英文题名：Study on the structural and magnetic properties of Fe/Co co-doped Bi4Ti3O12 ceramics

作者：Ti, Ruixia[1];Wang, Chaoyang[1];Wu, Huarui[1];Xu, Yan[1];Zhang, Chenyang[2]

第一作者：遆瑞霞

通讯作者：Ti, RX[1]

机构：[1]Xinxiang Univ, Coll Phys & Elect Engn, Xinxiang 453003, Peoples R China;[2]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Peoples R China

第一机构：新乡学院物理与电子工程学院

通讯机构：[1]corresponding author), Xinxiang Univ, Coll Phys & Elect Engn, Xinxiang 453003, Peoples R China.|[110717]新乡学院物理与电子工程学院;[11071]新乡学院;

年份：2019

卷号：45

期号：6

起止页码：7480-7487

外文期刊名：CERAMICS INTERNATIONAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000460492200113)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 51801171), the ninth group of key disciplines in Henan province (No. 2018119), the key scientific project of Higher education of Henan province (No. 18B140010), and the Dr. scientific research start project of Xinxiang University (Nos. 1366020083, 1366020099).

语种：英文

外文关键词：Magnetic properties; Spin glass; Exchange and superexchange interactions

摘要：Polycrystalline Bi-4(Ti3-xFex/2Cox/2)O-12 (0 <= x <= 0.4) ceramics are prepared by solid state reaction method. The low temperature ferromagnetism is successfully induced by Fe/Co co-doping. Particularly, the x = 0.3 ceramics possess the largest remnant magnetization (2M(r)) of about 0.272 emu/g at 100 K. Furthermore, all the doped ceramics undergo a ferromagnetic to paramagnetic transition, and show typical spin glass behavior, which is confirmed by the isothermal remnant magnetization and Memory Effect. The magnetic mechanisms probably originate from the coexistence and competition between ferromagnetic double exchange interactions and anti-ferromagnetic superexchange interactions, which lead to the appearance of the spin glass behavior in the doped ceramics and the strongest ferromagnetism in the x = 0.3 ceramics. The present work provides basic data and theoretical reference for the exploitation of the new multifunctional materials.