LOW-TEMPERATURE MAGNETIC-ELASTIC ANOMALIES IN FCC FE-CR-NI ALLOYS

被引：8
|
作者：
LEDBETTER, H
机构：
[1] Institute for Materials Science and Engineering, National Institute of Standards and Technology, Boulder
来源：
PHYSICA B | 1989年 / 161卷 / 1-3期
关键词：
D O I：
10.1016/0921-4526(89)90111-7
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Using ultrasonic methods, we measured the complete elastic constants of several polycrystalline face-centered-cubic Fe-Cr-Ni alloys at low temperatures: 4-295 K. The alloys represent nine interstitial (carbon-plus-nitrogen) compositions. We also measured dc magnetic susceptibility. Upon cooling, a paramagnetic-antiferromagnetic (Néel) phase transition occurs. The Néel transition temperature depends strongly on interstitial content. We fit both composition and temperature effects to Ducastelle's 3d-electron model, which contains two terms, band-structure and repulsive energies. © 1989.
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收藏
页码：91 / 95
页数：5
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