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Magnetocaloric effect of Gd(FexAl1−x)2 compounds

✍ Scribed by D.K. Xiong; D. Li; W. Liu; Z.D. Zhang

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
210 KB
Volume
369
Category
Article
ISSN
0921-4526

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✦ Synopsis

The magnetic properties and magnetocaloric effect of Gd(Fe x Al 1Àx ) 2 compounds with Laves-phase structure have been investigated. The temperature dependence of the magnetization of these compounds was measured to determine their Curie temperatures, while the change of the magnetic entropy was calculated from magnetization curves at different temperatures. Fe substitution for Al at first decreases the Curie temperature, and increases the change of the magnetic entropy. The largest value for the magnetic entropy DS M j j¼8:4 J=kg=K, is achieved for Gd(Fe 0.15 Al 0.85 ) 2 , which has the lowest Curie temperature. The magnetic entropy decreases with further increase of the Fe content, accompanied by an increase of the Curie temperature.

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