Synthesis and magnetic properties of SrO-Fe2O3-B2O3-Br2O3 glass-ceramics

被引：10

作者：

Zaitsev, DD ^{[1
]}

Kazin, PE

Tret'yakov, YD

Maksimov, YV

Suzdalev, IP

Jansen, M

机构：

[1] Moscow State Pedag Univ, Moscow 119992, Russia

[2] Russian Acad Sci, NN Semenov Chem Phys Inst, Moscow 119991, Russia

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

来源：

INORGANIC MATERIALS | 2004年 / 40卷 / 10期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1023/B:INMA.0000046479.10460.9c

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Glass of nominal composition SrFe12O19 + 12SrB(1.5)Bi(0.5)O(4) is prepared by rapid quenching from the liquid state and is converted to glass-ceramics containing fine SrFe12O19 particles by heat treatment between 600 and 850 degreesC. The materials are characterized by Mossbauer spectroscopy, x-ray diffraction, differential thermal analysis, electron microscopy, and magnetic measurements. All of the Fe in the glass is shown to be in the oxidation state 3+. The phase transformations accompanying glass crystallization are identified. The coercive field of the samples is shown to increase from 188 to 504 kA/m as the heat-treatment temperature is raised from 600 to 850 degreesC. The composite prepared by heat treatment at 850 degreesC contains submicron-sized SrFe12O19 particles with a thickness-to-diameter ratio of 0.33.

引用

页码：1111 / 1115

页数：5

共 13 条

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