Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1623327 | Journal of Alloys and Compounds | 2008 | 4 Pages |
Abstract
Sample of HoxEr1−xN (x = 0.25, 0.5, 0.75) were synthesized by hot isostatic pressing of alloy blocks in nitrogen gas and their specific heat were measured under zero-field and 5 T. The peak value of the specific heat associated with the ferro–para magnetic transition of HoxEr1−xN was lager than that of Er3Ni which is used commercially as a magnetic regenerator for the Gifford–McMahon refrigerator. Magnetic entropy change ΔS and adiabatic temperature range ΔT were evaluated from entropy curves under zero-field and 5 T. Both the properties were very promising from viewpoints of application of rare-earth mononitride to the magnetic refrigerant and/or regenerator working at cryogenic temperatures around their Curie's temperature.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yusuke Hirayama, Naoto Tomioka, Shohei Nishio, Naofumi Kusunose, Takashi Nakagawa, Koji Kamiya, Takenori Numazawa, Takao A. Yamamoto,