Cooling in rare-earth paramagnets at ultrahigh pulsed magnetic fields due to energy level crossing

Authors
Kazei, ZA Kolmakova, NP Platonov, VV Sidorenko, AA Tatsenko, OM
Citation
Za. Kazei et al., Cooling in rare-earth paramagnets at ultrahigh pulsed magnetic fields due to energy level crossing, PHYSICA B, 284, 2000, pp. 1483-1484
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
284
Year of publication
2000
Part
2
Pages
1483 - 1484
Database
ISI
SICI code
0921-4526(200007)284:<1483:CIRPAU>2.0.ZU;2-Z
Abstract
Maxima of differential magnetic susceptibility are observed at 4.2 K in a p ulsed field in the tetragonal paramagnets YbPO4 and PrVO4 at 280 and 45 T, respectively, caused by crossing of the energy levels of rare-earth ions. D ifferent characters of the level interactions result in different types of magnetocaloric effect in the adiabatic regime. A theory of these phenomena is developed. (C) 2000 Published by Elsevier Science B.V. All rights reserv ed.