Fine structure of acicular BaCoXTiXFe12-2XO19 particles and their magnetic properties

被引：23

作者：

Kakizaki, K

Hiratsuka, N

Namikawa, T

机构：

[1] Saitama Univ, Fac Engn, Dept Funct Mat Sci, Urawa, Saitama 338, Japan

[2] Tokyo Inst Technol, Dept Elect Chem, Midori Ku, Yokohama, Kanagawa 227, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1997年 / 176卷 / 01期

关键词：

particle; -; acicular; hexagonal barium ferrite; fine structure; magnetization mechanism; TEM observation;

D O I：

10.1016/S0304-8853(97)00634-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Acicular barium ferrite fine particles doped with Co2+ ions and Ti4+ ions were prepared by a conventional sintering method. We investigated particle fine structure and magnetization mechanism of the acicular BaCoXTiXFe12-2XO19 (X = 0-1.0) fine particles. By TEM observation for the acicular BaCoXTiXFe12-2XO19,, fine particles, it was clarified that the particles consisted of some grains and their c-axis was aligned along the short axis of the acicular particle. Moreover, magnetic tapes coated with these particles and binders under a magnetic field of 7 kOe were prepared to investigate their magnetization mechanism. It was confirmed that the magnetization mechanism of the acicular BaCoXTiXFe12-2XO19 fine particles was rotation magnetization by the measurement of the angular dependence of their coercivity.

引用

页码：36 / 40

页数：5

共 9 条

[1] PECULIAR EVOLUTION OF THE MAGNETIC-PROPERTIES WITH TEMPERATURE FOR (TI, CO)-SUBSTITUTED BARIUM FERRITES [J].