Title:
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Spin-glass behaviour in mixed metal oxides with a rutile-type structure
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Author:
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Labarta, Amílcar; Obradors, Xavier; Tejada Palacios, Javier; Berry, Frank J., 1947-; Sarson, M.
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Other authors:
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Universitat de Barcelona |
Abstract:
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We report here on the magnetic properties of compounds of composition Fe1−xCrxSbO4 and Fe1−xGaxSbO4. The introduction of paramagnetic Cr3+ and diamagnetic Ga3+ into the rutile‐related iron antimonate lattice does not destroy the antisite atomic ordering which exists in iron antimonate of composition FeSbO4. The initial slope of the Curie temperature dependence on x is similar in both series, indicating that Fe3+‐Cr3+ interactions are very small. The magnetic susceptibility measurements recorded from the compounds of composition Fe1−xCrxSbO4, x<0.4, and Fe0.9Ga0.1SbO4 show them to behave as spin glasses at low temperatures. The inhibition of compounds of the type Fe1−xCrxSbO4, x>0.4, and Fe1−xGaxSbO4, x>0.1 to undergo a spin‐glass transition above 4.2 K is associated with a dilution effect. |
Subject(s):
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-Vidres de spin -Propietats magnètiques -Efecte Mössbauer -Metall-òxid-semiconductors -Spin glasses -Magnetic properties -Mössbauer effect -Metal oxide semiconductors |
Rights:
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(c) American Institute of Physics , 1988
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Document type:
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Article Article - Published version |
Published by:
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American Institute of Physics
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