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Thermoremanence anomaly in Fe-Zr(B,Cu) Invar metallic glasses: Volume expansion induced ferromagnetism

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Publication Date
2000-01-01
Authors
Crespo del Arco, Patricia
Castaño, F. J.
Arcas, J.
Multigner, M.
Barandiarán, J. M.
Fernández Barquín, L.
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American Physical Society
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We report the existence of a thermally induced sharp increase of thermoremanence around the Curie temperature of Invar-like Fe-Zr(B,Cu) soft magnetic glasses. Neutron-diffraction measurements indicate that a true enhancement of the average local magnetic moment, rather than only a change in the domain structure, occurs. Such enhancement has been tentatively attributed to the increasing volume expansion that takes place beyond the Curie temperature and reinforces ferromagnetism in some low-density clusters.
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©2000 The American Physical Society
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