Phase transition and extended X-ray absorption fine structure of melt-spun amorphous Fe100-xYx alloys

被引：0
|
作者：
Takano, Hideaki [1 ]
Yano, Kazuo [2 ]
Nakai, Ikuo [3 ]
机构：
[1] Muroran Inst Technol, Dept Mat Sci & Engn, Muroran, Hokkaido 0508585, Japan
[2] Nihon Univ, CST, Phys Lab, Chiba 2748501, Japan
[3] Tottori Univ, Dept Elect & Elect Engn, Tottori 6808552, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2008年 / 320卷 / 08期
关键词：
melt-spun amorphous Fe-Y; phase diagram; reentrant spin glass; local structure; AC and DC susceptibility; EXAFS;
D O I：
10.1016/j.jmmm.2007.12.009
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The phase diagram and local structure of melt-spun amorphous (a-) Fe100-xYx (22 <= x <= 62) alloys were investigated using AC and DC magnetic and extended X-ray absorption. ne structure (EXAFS) measurements. The a-Fe-Y system shows reentrant spin glass (RSG) behavior for 42 <= x <= 58 and spin glass (RSG) behavior for 60 <= x. Two SG transition temperatures, T-g and T-f, were obtained in the RSG state. The Tg, Tf and Curie temperature T-C decrease with increasing x, and the TC and Tg vanish at x = 60. A new magnetic phase diagram for the melt-spun a-Fe100-xYx alloys was obtained from magnetic measurements for higher Y concentration. The magnetic states of the a-Fe100-xYx alloys change remarkably around x = 60 and an EXAFS study revealed that the average atomic distance between nearest-neighboring Fe atoms changes at approximately x = 60. (c) 2008 Elsevier B. V. All rights reserved.
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收藏
页码：1503 / 1511
页数：9
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