149Sm nuclear forward scattering of Sm4 Bi3 under high pressure

Hisao Kobayashi, Yoshitaka Yoda, Makoto Shirakawa, Akira Ochiai

Research output: Contribution to journalArticlepeer-review


High-pressure 149Sm nuclear forward scattering experiments have been performed on a mixed valence Sm4 Bi3 compound which shows a charge ordering at 260 K. A pressure-induced first-order structural phase transition takes place at 2.3 GPa and 200 K. We present the first clear experimental evidence that magnetic ordering occurs just above 120 K at 3.2 GPa. This magnetic ordering temperature is much higher than that at ambient pressure. The higher magnetic ordering temperature is consistent with the occurrence of a valence change of nonmagnetic Sm2 + ion toward magnetic Sm3 + ion at 2.3 GPa.

Original languageEnglish
Pages (from-to)305-307
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Issue number2 SUPPL. PART 1
Publication statusPublished - 2007 Mar
Externally publishedYes


  • High pressure
  • Nuclear forward scattering
  • Sm Bi

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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