Low temperature specific heat studies of amorphous and crystalline ErRu alloys

U. Mizutani, Y. Hoshino, Y. Hanaue, T. Takeshita, Asaya Fujita, K. Fukamichi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Low temperature specific heats have been measured in the temperature range 1.6-25 K on both amorphous and crystalline Er100-xRux (20≤x≤40) alloys. We can identify the observed specific heat anomalies in crystalline and amorphous alloys as arising from magnetic ordering into the antiferromagnetic and spin-glass states respectively by analysing the temperature dependences of magnetic susceptibility and electrical resistivity. Judging from an overall temperature dependence of the volmetric specific heat in the range below 25 K, we suggest that both amorphous and crystalline ErRu alloys containing 20-25 at.% Ru are potentially superior to Pb or even Er3Ni currently used as a regenerator material in a gas-cycle refrigerator.

Original languageEnglish
Pages (from-to)66-70
Number of pages5
JournalMaterials Science and Engineering B
Volume23
Issue number1
DOIs
Publication statusPublished - 1994 Jan 1

ASJC Scopus subject areas

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

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