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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.42  No.12 (2001)  >  pp.2622-2624

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Room-Temperature Magnetic Refrigerate System Gadolinium-Terbium-Neodynium

Zhang Xiyan1), Yang Ling1), Zhou Shijie1), Qi Linlin1) and Liu Zhinong1)
1) The Institute of Rare Earth and Informational Materials, Southwest Jiaotong University

A system of magnetic materials suited for a room temperature magneto-refrigeration, Gd–Tb–Nd, has been investigated. Samples were melted in an argon-protected high-frequency magnetic induction furnace. Magnetization curves were measured with a vibrating-sample magnetometer, in order to obtain the magnetic entropy change. Experimental results show that the Curie temperature (Tc) of the present system is near room temperature and decreases as the Tb and Nd contents increase. By addition of a small amount of Nd, the magnetic entropy change is comparable with that of Gd–Tb, and the transition temperature changes greatly. Therefore Nd can be used as a working temperature regulator. The Gd–Tb–Nd system is a prospect for realizing a large-scale room-temperature refrigeration in low magnetic fields.

magnetic refrigeration, magnetic entropy change, gadolinium-terbium-neodymium system

Received: January 09, 2001
Accepted: October 26, 2001 , Published online: September 06, 2005
Copyright (c) 2005 The Japan Institute of Metals



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