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Title: Origin of magnetic and magnetoelastic tweedlike precursor modulations in ferroic materials
Author: Saxena, A. (Avadh)
Castán i Vidal, Maria Teresa
Planes Vila, Antoni
Porta Tena, Marcel
Kishi, Y.
Lograsso, T. A.
Viehland, D.
Wuttig, Matthias
De Graef, Marc
Keywords: Materials ferromagnètics
Transformacions de fase (Física estadística)
Ferromagnetic materials
Phase transitions
Issue Date: 2004
Publisher: American Physical Society
Abstract: Based on experimental observations of modulated magnetic patterns in a Co0.5Ni0.205Ga0.295 alloy, we propose a model to describe a (purely) magnetic tweed and a magnetoelastic tweed. The former arises above the Curie (or Nel) temperature due to magnetic disorder. The latter results from compositional fluctuations coupling to strain and then to magnetism through the magnetoelastic interaction above the structural transition temperature. We discuss the origin of purely magnetic and magnetoelastic precursor modulations and their experimental thermodynamic signatures.
Note: Reproducció digital del document proporcionada per PROLA i
It is part of: Physical Review Letters, 2004, vol. 92, núm. 19, p. 197203-1-197203-4
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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