ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Rare-earth intermetallic compounds (Tb1−xGdx)Al2, have been successfully fabricated and characterized. Large magnetic entropy change, ΔSM, was observed in these alloys. The maximum −ΔSM(=14.3 J/kg K) is achieved in the TbAl2 alloy at its Curie temperature, TC=105 K, with a 5 T magnetic field change. It is shown that the alloys are very soft magnetic alloys. The magnetic entropy change is thus completely reversible in the whole temperature range of 80–180 K. An interesting feature in (Tb1−xGdx)Al2 compounds is that the Curie temperature can be easily shifted by tuning the composition. These alloys, therefore, appear to be an attractive material candidate for realizing the active magnetic regenerator magnetic refrigerator consisting of eight stages, as suggested by K. A. Gschneidner, Jr. and V. K. Percharsky. [Rare Earth: Science, Technology, and Applications III, edited by R. G. Bautista, C. O. Bounds, T. W. Ellis, and B. T. Kilbourn (The Minerals, Metals and Materials Society, 1997), p. 209.] © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1290389
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