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Field and temperature induced magnetic transition in Gd5Sn4: a giant magnetocaloric material
D H Ryan1, Miryam Elouneg-Jamróz, J van Lierop
1Physics Department and Centre for the Physics of Materials, McGill University, 3600 University Street, Montreal, Quebec H3A 2T8, Canada.
Physical Review Letters
|April 12, 2003
Abstract:
Gd5Sn4 exhibits a giant magnetocaloric effect comparable to that reported in the Gd5(Si,Ge)(4) system. The giant magnetocaloric effect is associated with a first-order change that occurs at approximately 82 K in zero field, and can be reversed by the application of an external field of a few Tesla. 119Sn Mössbauer spectroscopy shows that this material is magnetically inhomogeneous over a wide range of temperatures and fields.