Title:
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Precursor nanoscale modulations in ferromagnets: Modeling and thermodynamic characterization
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Author:
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Porta Tena, Marcel; Castán i Vidal, Maria Teresa; Planes Vila, Antoni; Saxena, A. (Avadh)
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Other authors:
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Universitat de Barcelona |
Abstract:
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Using a Ginzburg-Landau model for the magnetic degrees of freedom with coupling to disorder, we demonstrate through simulations the existence of stripelike magnetic precursors recently observed in Co-Ni-Al alloys above the Curie temperature. We characterize these magnetic modulations by means of the temperature dependence of local magnetization distribution, magnetized volume fraction, and magnetic susceptibility. We also obtain a temperature-disorder strength phase diagram in which a magnetic tweed phase exists in a small region between the paramagnetic and dipolar phases. |
Subject(s):
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-Materials ferromagnètics -Mètodes de simulació -Transformacions martensítiques -Ferromagnetic materials -Simulation methods -Martensitic transformations |
Rights:
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(c) The American Physical Society, 2005
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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