期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 456, 期 -, 页码 381-389出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2018.02.065
关键词
Bismuth ferrite; Ni doped BiFeO3; Multiferroic; Mechanochemical processing; Sillenite
Nickel doped bismuth ferrite powders, BiFe1-x NixO3 (0 <= x <= 0.5), were synthesized by high-energy ball milling followed by an annealing at 700 degrees C. A detailed study about the substitution of Fe3+ by Ni2+ on the crystal structure and multiferroic properties is presented. The X-ray diffraction patterns reveal the formation of rhombohedral structure with small amounts of Bi2Fe4O9 as a secondary phase for x < 0.1. Also it is inferred the stabilization of a Bi25FeO40, sillenite phase, as the amount of Ni2+ substitution increases, reaching up 95.23% of sillenite for x = 0.5. The magnetic behavior indicates the frustration of the G-antiferromagnetic order typical of the un-doped BiFeO3, caused by the presence of small amounts of Ni2+ (x < 0.1) on the structure. The DC conductivity exhibited a little increment with increasing Ni content (up to x = 0.1). Although the conductivity increases, for nickel concentrations of 0.2-0.5, the bismuth ferrites doped with nickel retain their property of being an electrical insulating material. Behavior modifications of electrical conductivity, permittivity and dielectric loss versus frequency are related with crystal structure transformations, when nickel concentration is increased. (C) 2018 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据