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

H. Akbarzadeh; P. H. Keesom; M. W. Meisel; William P Halperin

doi:10.1103/PhysRevB.29.2622

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

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	2622-2629
Number of pages	8
Journal	Physical Review B
Volume	29
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.29.2622
State	Published - Jan 1 1984

ASJC Scopus subject areas

Condensed Matter Physics

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10.1103/PhysRevB.29.2622

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title = "Low-temperature calorimetric investigation of Co-Ga spin-glass",

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.",

author = "H. Akbarzadeh and Keesom, {P. H.} and Meisel, {M. W.} and Halperin, {William P}",

year = "1984",

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T1 - Low-temperature calorimetric investigation of Co-Ga spin-glass

AU - Akbarzadeh, H.

AU - Keesom, P. H.

AU - Meisel, M. W.

AU - Halperin, William P

PY - 1984/1/1

Y1 - 1984/1/1

N2 - 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.

AB - 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.

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

Abstract

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