Magnetic phase transition of gadolinium studied by acoustically detected magnetocaloric effect

被引：16

作者：

Glorieux, C ^{[1
]}

Caerels, J ^{[1
]}

Thoen, J ^{[1
]}

机构：

[1] KATHOLIEKE UNIV LEUVEN,DEPT NAT KUNDE,LAB AKOESTIEK & THERM FYS,B-3001 HEVERLEE,BELGIUM

来源：

JOURNAL OF APPLIED PHYSICS | 1996年 / 80卷 / 06期

关键词：

D O I：

10.1063/1.363208

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This article reports on an investigation of the ferromagnetic to paramagnetic phase transition of gadolinium by means of a novel acoustic detection technique of magnetically induced temperature oscillations. Equations are derived for the magnetocaloric signal at the fundamental frequency of the magnetic field oscillation as well. as for the second harmonic of the signal in terms of the temperature derivatives of the magnetization and of the susceptibility and specific heat capacity at constant magnetic field. Experimental data for three samples of different quality are analyzed with the theoretically derived equations and qualitatively compared with the linear model for critical behavior. (C) 1996 American Institute of Physics.

引用

页码：3412 / 3421

页数：10

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