Low temperature characterization of nano-sized BaFe12-2xZnxSnxO19 particles

被引：32

作者：

Fang, HC ^{[1
]}

Ong, CK

Zhang, XY

Li, Y

Wang, XZ

Yang, Z

机构：

[1] Natl Univ Singapore, Dept Phys, Singapore 119260, Singapore

[2] Natl Univ Singapore, Dept Mat Sci, Singapore 119260, Singapore

[3] Lanzhou Univ, Res Inst Magnet Mat, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 191卷 / 03期

关键词：

barium ferrite; nano-particle; substitution; magnetic properties; low temperature; temperature dependence;

D O I：

10.1016/S0304-8853(98)00381-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low temperature magnetic properties of (Zn-Sn) substituted barium hexaferrite nano-particles (BaFe12-2x ZnxSnxO19) from 78 to 293 K have been measured to study the substitution effects on their temperature dependence characteristics. It was found that suitable amount of substitution could increase the saturation magnetization M-s, which became obvious only at temperatures lower than 293 K. Different from other types of dopant-combinations, BaFe12-2xZnxSnxO19 particles showed a small positive temperature coefficient of coercivity in this temperature range. This coefficient decreased with the increase of substitution concentration x from about 3.7 Oe/K (x = 0) to 1.9 Oe/K (x = 1.1). The anisotropy constant K-1 of these particles increased linearly with the decrease of temperature. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：277 / 281

页数：5

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