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, Ruixia|[1107151071058]遆瑞霞;

机构：[1] College of Physics and Electronic Engineering, Xinxiang University, Xinxiang, 453003, China; [2] College of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang, 453003, China

第一机构：新乡学院物理与电子工程学院

通讯机构：[1]College of Physics and Electronic Engineering, Xinxiang University, Xinxiang, 453003, 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：EI(收录号：20190306377422);Scopus(收录号：2-s2.0-85059843687)

语种：英文

外文关键词：Glass - Temperature - Solid state reactions - Ferromagnetic materials - Cobalt compounds - Iron compounds - Ceramic materials - Spin glass - Titanium compounds - Bismuth compounds - Glass transition - Magnetic properties - Magnetization

摘要：Polycrystalline Bi4(Ti3-xFex/2Cox/2)O12 (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 (2Mr) 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 antiferromagnetic 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. ? 2019 Elsevier Ltd and Techna Group S.r.l.