High frequency magnetic mechanism of Ni-substituted Co2Z hexagonal ferrite

被引：26
|
作者：
Bai, Yang [1 ]
Xu, Fang [1 ]
Qiao, Lijie [1 ]
Zhou, Ji [2 ]
机构：
[1] Univ Sci & Technol Beijing, Minist Educ, Key Lab Environm Fracture, Ctr Corros & Protect, Beijing 100083, Peoples R China
[2] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2009年 / 44卷 / 04期
关键词：
Magnetic materials; Ceramics; Impedance spectroscopy; Magnetic properties; PERMEABILITY; HEXAFERRITE;
D O I：
10.1016/j.materresbull.2008.08.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetic properties, especially the high frequency magnetic mechanism, of Ni-substituted CO(2)Z hexagonal ferrite were studied. The polycrystalline Z-type hexagonal ferrite of Ba3NixCO2-xFe24O41 (0 <= x <= 2) were prepared by solid-state reaction. The results indicate that Ni-substituted Co(2)Z samples all exhibit typical soft magnetic character. Substitution of Ni for Co will turn the planar magnetocrystalline anisotropy of CO(2)Z to uniaxial anisotropy when x >= 1, so that the permeability drops dramatically and domain wall resonance appears in the frequency spectra. With the rise of Ni amount or sintering temperature, domain wall resonance strengthens gradually. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：898 / 900
页数：3
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