On the mechanism of the paramagnetic-to-ferromagnetic transition in Fe-Al

被引：56

作者：

Yang, Y ^{[1
]}

Baker, I

Martin, P

机构：

[1] Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA

[2] Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA

来源：

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1999年 / 79卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/13642819908206419

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Single crystals of Fe-40 at.% Al were cold rolled to a variety of strains up to 48%, when cracking occurred. The rolled crystals were heated at 10 K min(-1) to 973 K in a differential scanning calorimeter, whereupon three exothermic peaks were observed. The cold rolling also induced a transition from paramagnetism to ferromagnetism. At room temperature, the ferromagnetism disappeared upon annealing above the lowest-temperature exothermic peak, but at temperatures below 225 K the annealed specimen still showed a larger magnetic susceptibility than the virgin single crystal. Analysis of the possible contributions to the ferromagnetic behaviour suggests that antiphase boundaries (APBs), principally in APE tubes, are the source.

引用

页码：449 / 461

页数：13

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