Magnetic susceptibility of quasicrystalline Al65Cu22Fe13 powders

被引：0
|
作者：
A. A. Nikonov
P. V. Semenovskiĭ
A. A. Teplov
D. S. Shaĭtura
机构：
[1] Russian Research Centre Kurchatov Institute,
来源：
Crystallography Reports | 2007年 / 52卷
关键词：
61.44.Br; 75.50.Kj;
D O I：
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学科分类号：
摘要：
Magnetic properties of quasicrystalline Al65Cu22Fe13 powders synthesized by the solid-phase diffusion method via thermal treatment in vacuum or a hydrogen atmosphere have been studied. The powders synthesized in vacuum are found to contain a ferromagnetic fraction. The formation of iron oxide Fe3O4 is shown to be the most probable cause of the existence of this fraction. It is possible to avoid the formation of the ferromagnetic fraction in the powders synthesized or annealed in hydrogen. Removal of the ferromagnetic fraction from the powder by repeated magnetic separation made it possible to obtain a quasicrystalline fraction, for which the behavior of the magnetic susceptibility can be explained by the formation of nanoclusters. Such behavior is a general and integral property of quasicrystalline powders synthesized in both vacuum and hydrogen.
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页码：980 / 983
页数：3
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