Valence transition induced by pressure and magnetic field in antiferromagnet EuRh2Si2

Akihiro Mitsuda, Suguru Hamano, Hirofumi Wada

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)


We report the effects of a magnetic field on a pressure-induced valence transition in EuRh2Si2 by using magnetization measurements under high pressure. The M-H curves at 2 K under various pressures up to 1.18 GPa exhibit no anomalies associated with a field-induced valence transition. On the other hand, the M-H curves under a pressure of ∼ 1 GPa, where a temperature-induced valence transition occurs at around 30 K, show a clear metamagnetic transition with a large hysteresis at around 30 K. This behavior corresponds to a field-induced valence transition. The M-T curves in magnetic fields indicate that with increasing magnetic field, the temperature-induced valence transition shifts toward lower temperature and that its thermal hysteresis becomes larger. Cooling the sample under a pressure of ∼ 1 GPa in a magnetic field of 7 T collapses the valence transition and stabilizes the magnetic high-temperature phase down to 2 K. Besides, with decreasing magnetic field, three sharp valence transitions toward the nonmagnetic Eu3+ direction are observed: 4.65, 2.65 and 1.93 T.

ジャーナルJournal of the Korean Physical Society
出版ステータス出版済み - 7月 2013

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)


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