Re-entrant spin glass behaviour and large magnetocaloric effect in Er2PtSi3

D. X. Li, Y. Homma, A. Nakamura, F. Honda, T. Yamamura, D. Aoki

研究成果: Contribution to journalConference article査読

1 被引用数 (Scopus)

抄録

We present the magnetic properties and magnetocaloric effect of ternary intermetallic compound Er2PtSi3 with the orthorhombic Ba2LiSi3-type structure. Dc magnetization, ac susceptibilit, magnetic relaxation, electrical resistivity and specific heat measurements indicate that this system undergoes two magnetic phase transitions from a paramagnetic state sequentially to an antifwerromagnetic state at TN=5.4 K and then to a random spin freezing state at Tf=2.4 K. In addition, the large magnetocaloric effect is also observed for the Er2PtSi3 alloy. Near its Néel temperature TN, the maximum magnetic entropy change, relative cooling power and maximum adiabatic temperature change are estimated to be 16.1 Jkg-1K-1, 290 Jkg-1 and 7.7 K, respectively, for a field change of 5 T. These results suggest that Er2PtSi3 should be classified as a re-entrant spin-glass system and can be considered as a potential lowerature magnetic refrigeration material.

本文言語英語
論文番号042003
ジャーナルJournal of Physics: Conference Series
807
4
DOI
出版ステータス出版済み - 4 6 2017
外部発表はい
イベント18th International Conference on Strongly Correlated Electron Systems, SCES 2016 - Hangzhou, 中国
継続期間: 5 9 20165 13 2016

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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