GIANT MAGNETOCALORIC EFFECT IN GD-5(SI2GE2)

Authors
PECHARSKY VK GSCHNEIDNER KA
Citation
Vk. Pecharsky et Ka. Gschneidner, GIANT MAGNETOCALORIC EFFECT IN GD-5(SI2GE2), Physical review letters, 78(23), 1997, pp. 4494-4497
Citations number
14
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
23
Year of publication
1997
Pages
4494 - 4497
Database
ISI
SICI code
0031-9007(1997)78:23<4494:GMEIG>2.0.ZU;2-I
Abstract
An extremely large magnetic entropy change has been discovered in Gd-5 (Si2Ge2) when subjected to a change in the magnetic field. It exceeds the reversible (with respect to an alternating magnetic field) magneto caloric effect in any known magnetic material by at least a factor of 2, and it is due to a first order [ferromagnetic (I) <-> ferromagnetic (II)] phase transition at 276 K and its unique magnetic field depende nce.