Magnetic properties of La-Co substituted M-type strontium hexaferrites prepared by polymerizable complex method

被引：85

作者：

Kikuchi, Takeyuki ^{[1
]}

Nakamura, Tatsuya ^{[2
]}

Yamasaki, Tohru ^{[1
]}

Nakanishi, Makoto ^{[3
]}

Fujii, Tatsuo ^{[3
]}

Takada, Jun ^{[3
]}

Ikeda, Yasunori ^{[4
]}

机构：

[1] Univ Hyogo, Grad Sch Engn, Dept Mat Sci & Chem, Himeji, Hyogo 6712280, Japan

[2] Univ Hyogo, Grad Sch Engn, Dept Elect Engn & Comp Sci, Himeji, Hyogo 6712280, Japan

[3] Okayama Univ, Dept Appl Chem, Fac Engn, Okayama 7008530, Japan

[4] Res Inst Prod Dev, Sakyo Ku, Kyoto 6060805, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2010年 / 322卷 / 16期

关键词：

M-type strontium hexaferrite; La-Co substitution; Polymerizable complex method; BARIUM FERRITE PARTICLES; AEROSOL; POWDER; COPRECIPITATION;

D O I：

10.1016/j.jmmm.2010.02.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic properties of La-Co substituted M-type strontium hexaferrites were studied. The samples were prepared by polymerizable complex method. Crystal structure of samples has been investigated by powder X-ray diffraction (XRD). Single-phase M-type strontium hexaferrites with chemical composition of Sr(1.05-x)La(x)Fe(12-x)Co(x)O(19) (x = 0-0.4) were formed by heating at 1173 K for 24 h in air. Magnetic properties were discussed by measurements of M-H curves with vibrating sample magnetometer (VSM). La-Co substituted M-type strontium hexaferrites prepared by polymerizable complex method showed typical magnetic hysteresis of hard ferrite. The coercive force increased significantly by La-Co substitution with polymerizable complex method. Maximum coercive force achieved in this study is 8.0 kOe (640 kA/m). Scanning electron microscopy revealed that the prepared ferrite particles have plate-like shape of diameter range between 20 and 500 nm. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2381 / 2385

页数：5

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