期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 452, 期 -, 页码 354-359出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2017.12.105
关键词
W-type ferrite; Sintering; Microstructure; Magnetic properties
资金
- National Natural Science Foundation of China [51472004, 51272003]
We report a successful preparation of Ba1-xLaxFe22+Fe163+O27 (x = 0.00-0.10) W-type hexagonal ferrites by standard ceramic method in a reduced oxygen atmosphere. In this work, the effect of the substitution La3+ rare-earth ions for Ba2+ ions on the structural and magnetic properties of the prepared samples have been studied. The phase identification of magnetic powders was performed by X-ray diffraction. The results of XRD show that the single phase was observed in the W-type ferrites with different La content. The SEM micrographs showed that the ferrites have formed the hexagonal structure. The magnetic properties of the samples were metric by a vibrating sample magnetometer. The coercivity (H-c) of the particles decreases with the increase of La content(x), while the saturation magnetization (M-s) of the particles first increases with x from 0 to 0.05, and then begins to decrease when x continues to increase. The monotonic dependence of the magnetic anisotropy field H-a and coercivity H-c on the La3+ doping amount is found to be mainly dominated by the competition between M-s and K-eff. (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