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Fluctuations of pair correlations and the spin glass transition in amorphous Al2Mn3Si3O12

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Zeitschrift für Physik B Condensed Matter

Abstract

The time fluctuations of the pair correlations in the amorphous spin glass Al2Mn3Si3O12 were investigated by quasi-elastic neutron scattering. Their time constant follows an Arrhenius law\(\tau = \tau _\infty e^{E_a /k_B T} \) from room temperature down to below the spin glass temperatureT f. No static component of the pair correlation was found. It is shown that an Arrhenius law can qualitatively account for all the phenomena associated with the ac susceptibility as a function of temperature, ac frequency and applied dc magnetic field.

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Author notes

  1. W. Nägele

    Present address: Kernforschungszentrum Karisruhe GmbH Abt. Kerntechnische Betriebe/Heiße Zellen, Postfach 3640, D-7500, Karlsruhe 1, FRG

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  1. Institut für Kristallographie der Universität, Tübingen, Federal Republic of Germany

    W. Nägele

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  1. W. Nägele
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Dedicated to Professor Jagodzinski on the occasion of his 65th birthday

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Nägele, W. Fluctuations of pair correlations and the spin glass transition in amorphous Al2Mn3Si3O12 . Z. Physik B - Condensed Matter 42, 135–142 (1981). https://doi.org/10.1007/BF01319547

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