Low-temperature calorimetric investigation of Co-Ga spin-glass

H. Akbarzadeh*, P. H. Keesom, M. W. Meisel, William P Halperin

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Low-temperature specific-heat measurements are presented for the spin-glass alloys CoxGa1-x with x between 0.49 and 0.58. For these compositions the antistructure defects are the principal magnetic entities with concentrations in the range 0.9-8.0%. For the high-concentration samples, nuclear Schottky and spin-wave contributions to the specific heat have been identified. Over the entire composition range a term with a linear temperature dependence has been found and is identified with the spin-glass state. Measurements have been taken in magnetic field from 0 to 2.8 T. These data can be understood in terms of a model with a distribution of two-level systems.

Original languageEnglish (US)
Pages (from-to)2622-2629
Number of pages8
JournalPhysical Review B
Volume29
Issue number5
DOIs
StatePublished - Jan 1 1984

ASJC Scopus subject areas

  • Condensed Matter Physics

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