Microwave properties of ZnTi-substituted M-type barium hexaferrites

被引：14

作者：

Feng, QY ^{[1
]}

Jen, L ^{[1
]}

机构：

[1] SW Jiao Tong Univ, Inst Electromagnet Theory & Microwave Tech, Chengdu 610031, Sichuan, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2002年 / 38卷 / 02期

基金：

中国国家自然科学基金;

关键词：

anisotropy field; Curie temperature; hexaferrites; saturation magnetization;

D O I：

10.1109/20.996032

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have prepared magnetic anisotropic polycrystalline hexaferrites Ba(ZnTi)(x)Fe12-2xO19 with high orientation degrees f and low dielectric loss tangent tgdelta(epsilon) by standard ceramic techniques with magnetic alignment of the grains' c axis during wet pressing and in flowing-oxygen sintering. When x increases, the saturation magnetization M-s, the Curie temperature T-c, and the anisotropy field H-a of the hexaferrites decrease. The results can be interpreted by assuming that Zn2+ ions replace Fe3+ ions of the tetrahedral 4(f1) sites and hexahedral 2d sites while Ti4+ ions replace spin up Fe3+ ions of octahedral sublattices 12k and 2a.

引用

页码：1391 / 1394

页数：4

共 6 条

[1] THEORY OF IONIC ORDERING, CRYSTAL DISTORTION, AND MAGNETIC EXCHANGE DUE TO COVALENT FORCES IN SPINELS [J].