Mossbauer study of amorphous and nanocrystalline FeZrBCu alloys

被引：9

作者：

Kopcewicz, M ^{[1
]}

Grabias, A ^{[1
]}

Nowicki, P ^{[1
]}

机构：

[1] WARSAW UNIV TECHNOL,INST MAT SCI & ENGN,PL-02524 WARSAW,POLAND

来源：

NANOSTRUCTURED MATERIALS | 1995年 / 6卷 / 5-8期

关键词：

D O I：

10.1016/0965-9773(95)00219-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and magnetic properties of the nanocrystalline bcc phase formed by annealing at 500-600 degrees C of the amorphous Fe81Zr7B12 and Fe79Zr7B12Cu2 alloys are studied using Mossbauer spectroscopy The unconventional rf-Mossbauer experiments in which the radio-frequency induced effects (rf collapse and rf sidebands) are used allow the nanocrystalline alpha-Fe phase to be distinguished from the magnetically harder microcrystalline alpha-Fe formed at higher annealing temperatures The complete rf collapse of the magnetic hyperfine structure occurs only in the amorphous and nanocrystalline phases and is suppressed by the formation of microcrystalline alpha-Fe. The rf sidebands disappear when the nanocrystalline phase is formed revealing that magnetostriction vanishes. The rf-Mossbauer experiments performed as a function of the rf field intensity allowed the determination of the distribution of anisotropy fields related to the size distribution of the alpha-Fe grains.

引用

页码：957 / 960

页数：4

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