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Frequency dependence of the freezing temperature in spin glasses: A comparative study of (La, Gd)B6, (Y, Gd)Al2 and (La, Gd)Al2

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Zeitschrift für Physik B Condensed Matter

Abstract

The frequency dependence of the freezing temperatureT f(ν) is determined for the dilute spin glass systems (La, Gd)B6 and (Y, Gd)Al2 in the frequency range 10–1,000 Hz. While for (La, Gd)B6,T f(ν) is found to be weak, for (Y, Gd)Al2 T f(ν) is even stronger than for the previously studied system (La, Gd)Al2. Both, measurements of the temperature dependence of the susceptibility nearT f and calculations of the RKKY pair interaction, suggest that this difference is correlated with a different sign of the nearest-neighbor interaction, which appears to be antiferromagnetic for (La, Gd)B6 and ferromagnetic for (Y, Gd)Al2 as well as (La, Gd)Al2.

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Author notes

  1. J. Aarts

    Present address: Natuurkundig Laboratorium, Universiteit van Amsterdam, The Netherlands

Authors and Affiliations

  1. II. Physikalisches Institut der Universität zu Köln, Zülpicher Straße 77, D-5000, Köln 41, Federal Republic of Germany

    J. Aarts

  2. I. Physikalisches Institut der Universität, Bunsenstraße 9, D-3400, Göttingen, Federal Republic of Germany

    W. Felsch

  3. 2. Physikalisches Institut der RWTH, Templergraben, D-5100, Aachen, Federal Republic of Germany

    H. v. Löhneysen

  4. Institut für Festkörperphysik der Technischen Hochschule, Hochschulstraße 2, D-6100, Darmstadt, Federal Republic of Germany

    F. Steglich

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  1. J. Aarts
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  2. W. Felsch
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  3. H. v. Löhneysen
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  4. F. Steglich
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Aarts, J., Felsch, W., v. Löhneysen, H. et al. Frequency dependence of the freezing temperature in spin glasses: A comparative study of (La, Gd)B6, (Y, Gd)Al2 and (La, Gd)Al2 . Z. Physik B - Condensed Matter 40, 127–132 (1980). https://doi.org/10.1007/BF01295080

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