Preparation of magnetic glass-ceramics through glass crystallization in the Na2O-SrO-Fe2O3-B2O3 system

被引：17

作者：

Zaitsev, DD ^{[1
]}

Gravchikova, EA

Kazin, PE

Garshev, AV

Tret'yakov, YD

Jansen, M

机构：

[1] Moscow MV Lomonosov State Univ, Vorobevy Gory 1, Moscow 119992, Russia

[2] Max Planck Inst Festkorperforsch, D-70569 Stuttgart 80, Germany

来源：

INORGANIC MATERIALS | 2006年 / 42卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S0020168506030198

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Glasses with the nominal compositions SrFe12O19 + nNa(2)Sr(2)B(4)O(9) (n = 4, 6, 8, 10) and SrFe12O19 + 6Na(2)Sr(3)B(4)O(10) were prepared via rapid quenching of oxide melts and were then heat-treated between 500 and 800 degrees C in order to produce glass-ceramics containing fine SrFe12O19 particles. The materials were characterized by x-ray diffraction, differential thermal analysis, electron microscopy, and magnetic measurements. The crystallization behavior of the glasses was investigated. The coercivity of the glass-ceramics was shown to increase with heat-treatment temperature, up to 486 kA/m. By dissolving the nonmagnetic matrix of the glass-ceramics with the nominal compositions SrFe12O19 + 6Na(2)Sr(3)B(4)O(10) and SrFe12O19 + 4Na(2)Sr(2)B(4)O(9), submicron-sized strontium hexaferrite particles were obtained.

引用

页码：326 / 330

页数：5

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