Large magnetic entropy change in Dy1-xHoxNi 2B2C (x = 0-1) superconductors

Lingwei Li*, Katsuhiko Nishimura, Dexuan Huo, Michiaki Kadonaga, Takahiro Namiki, Zhenghong Qian

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

The magnetocaloric effect in antiferromagnetic superconductors Dy 1-xHoxNi2B2C (x = 0, 0.3, 0.5, 0.7, and 1) has been studied. The magnetic transition temperature TM as well as the temperature of the maximum magnetic entropy change (-ΔSM max) gradually shift to low temperature with increasing x, while the values of -ΔSM max remain at almost the same high value. The observed large magnetic entropy is related to a fieldinduced first-order metamagnetic transition from antiferromagnetic to ferromagnetic state. The large values of -ΔSM and high relative cooling power with tuneable TM indicate that Dy1-xHoxNi 2B2C could be used for low-temperature magnetic refrigeration.

Original languageEnglish
Article number093101
JournalApplied Physics Express
Volume4
Issue number9
DOIs
StatePublished - 2011/09

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy

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