Thermodynamic aspects of magnetic-field-driven phase transformations in Gd-Si-Ge alloys

被引：13

作者：

Basso, V ^{[1
]}

Lobue, M ^{[1
]}

Sasso, CP ^{[1
]}

Bertotti, G ^{[1
]}

机构：

[1] Ist Elettrotecnico Nazl Galileo Ferraris, I-10135 Turin, Italy

来源：

JOURNAL OF APPLIED PHYSICS | 2006年 / 99卷 / 08期

关键词：

D O I：

10.1063/1.2163836

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A temperature-dependent Preisach model is proposed to describe hysteresis in materials in which a structural phase transformation driven by the magnetic field takes place. The model is applied to the interpretation of the temperature dependence of hysteretic magnetization curves measured for Gd-Si-Ge alloys. Predictions about the entropy exchanged during transformations under increasing or decreasing field reveal the role played by internal dissipative processes. (C) 2006 American Institute of Physics.

引用

页数：3

共 9 条

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