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

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

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23 Citations (Scopus)


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
Issue number11
Publication statusPublished - Jan 1 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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