Changing the magnetism of amorphous FeSiB by mechanical milling

被引:2
|
作者
Del Bianco, L. [1 ,2 ]
Spizzo, F. [3 ,4 ]
Tamisari, M. [3 ,4 ]
Bonetti, E. [1 ,2 ]
Ronconi, F. [3 ,4 ]
Fiorani, D. [5 ]
机构
[1] Univ Bologna, Dipartimento Fis, I-40127 Bologna, Italy
[2] CNISM, I-40127 Bologna, Italy
[3] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy
[4] CNISM, I-44100 Ferrara, Italy
[5] CNR, Ist Struttura Mat, I-00016 Rome, Italy
关键词
ALLOYS; CRYSTALLIZATION; KINETICS;
D O I
10.1088/0953-8984/22/29/296010
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We have studied the magnetic properties of a sample obtained by high-energy mechanical milling from a ferromagnetic FeSiB amorphous ribbon. The milled material mainly consists of a Fe-based amorphous matrix embedding a minor fraction of alpha-Fe nanocrystallites (similar to 23%), and magnetization dynamics effects characterize the magnetic behavior. In particular, a magnetic transition occurs at T similar to 50 K, from a low temperature disordered collective frozen state, similar to a spin-cluster-glass, to a high temperature regime where ferromagnetism predominates. The phenomenon has been ultimately ascribed to the local modification of the interatomic distance distribution in the amorphous matrix, induced by milling.
引用
收藏
页数:5
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