First-Order Valence Transition of EuPd2Si2 Induced by High Magnetic Fields

Hirofumi Wada, Akihiro Mitsuda, Masayuki Shiga, Hiroko Aruga Katori, Tsuneaki Goto

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

In order to study the magnetic field effects on the intermediate valence of the Eu system, magnetization was measured for EuPd2Si2 and Eu(Pd0.95Pt0.05)2Si2 up to 100 T. A first-order metamagnetic transition was observed for both samples under high magnetic fields. The transition field is 93T for EuPd2Si2 at 6 K. The saturation magnetization close to 7μB indicates that this metamagnetism is a field-induced valence transition from an intermediate valence state to a divalent state of the Eu ion. Based on the interconfigurational fluctuation (ICF) model, the excitation energy to convert an Eu3+ ion into Eu2+ was estimated. Temperature dependence of the metamagnetic transition field of EuPd2Si2 was also studied.

Original languageEnglish
Pages (from-to)3471-3473
Number of pages3
Journaljournal of the physical society of japan
Volume65
Issue number11
DOIs
Publication statusPublished - Jan 1 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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