Thermal expansion anomaly in amorphous YFe spin glasses

Takeshi Suzuki, Asaya Fujita, Te Hsuan Chiang, Kazuaki Fukamichi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The thermal expansion anomaly in amorphous Y100-xFex (70 ≤ x ≤ 92.5) alloys has been measured with a differential transformer-type dilatometer. A large thermal expansion anomaly is observed in spite of the absence of ferromagnetism, and its magnitude is as large as that of amorphous LuFe alloys which exhibit a re-entrant spin-glass behavior. This clearly indicates that the magnetovolume effect is not necessarily correlated with the appearance of ferromagnetism. The large negative electronic contribution to the thermal expansion coefficient of amorphous YFe alloys is similar to that of Fe-based FeNi alloys. Such a characteristic property is explained by taking into account the amplitude of the local moment.

Original languageEnglish
Pages (from-to)954-957
Number of pages4
JournalMaterials Science and Engineering A
Volume181-182
Issue numberC
DOIs
Publication statusPublished - 1994 May 15

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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