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Magnetocaloric effects in intermetallic compounds

R. TETEAN1,*

Affiliation

  1. Babes-Bolyai University, Faculty of Physics, RO-400084, Cluj-Napoca, Romania

Abstract

Nowadays, there is a great deal of interest in using the magnetocaloric effect (MCE) for refrigeration, from room temperature to the temperatures of hydrogen and helium liquefaction. Owing to its high efficiency and environmental friendliness, room-temperature magnetic refrigeration has been demonstrated to be a promising alterative for conventional vapor-cycle refrigeration. It has been reported that the lanthanide (R) Laves phases (RM2, where M = Al, Co and Ni), materials exhibit an excellent magnetocaloric effect (MCE) near room temperature. The magnetic properties and MCE in Tb8Co16-XAlX compounds is reported. The cobalt behavior is analyzed in spin fluctuation model. The potential use of these materials in magnetic refrigeration is discussed..

Keywords

Magnetocaloric effect, Magnetization, Rare-earth-transition metal compounds, Susceptibility.

Submitted at: Nov. 2, 2006
Accepted at: April 15, 2007

Citation

R. TETEAN, Magnetocaloric effects in intermetallic compounds, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 4, pp. 1104-1107 (2007)