Thermomagnetic history effects across the first order magneto-structural transition in the giant magnetocaloric Fe-Rh alloy

被引：12

作者：

Manekar, M. ^{[1
]}

Roy, S. B. ^{[1
]}

机构：

[1] Raja Ramanna Ctr Adv Technol, Magnet & Superconducting Mat Sect, Indore 452013, India

来源：

EUROPEAN PHYSICAL JOURNAL B | 2008年 / 64卷 / 01期

关键词：

D O I：

10.1140/epjb/e2008-00268-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Results of ac susceptibility and isofield and isothermal magnetization measurements on a poly-crystalline Fe-Rh alloy are presented across the first order magneto-structural transition. Interesting thermomagnetic history effects are observed, including the one in which the virgin magnetization curve lies outside the envelope curve in an isothermal field variation of magnetization. These thermomagnetic history effects are interpreted in terms of a disorder influenced first order phase transition and associated features like phase coexistence and metastability, without invoking the idea of a kinetic arrest of the transition. The importance of understanding these history effects is highlighted in the context of repeatable functional properties of Fe-Rh alloy.

引用

页码：19 / 25

页数：7

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