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2005

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/10550

Precursor nanoscale modulations in ferromagnets: Modeling and thermodynamic characterization

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http://dx.doi.org/10.1103/PhysRevB.72.054111

Abstract

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

Materials ferromagnètics, Mètodes de simulació, Transformacions martensítiques

Subject (English)

Ferromagnetic materials, Simulation methods, Martensitic transformations

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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PORTA TENA, Marcel, et al. Precursor nanoscale modulations in ferromagnets: Modeling and thermodynamic characterization. Physical Review B. 2005. Vol. 72, num. 054111-054118. ISSN 0163-1829. [consulted: 17 of August of 2026]. Available at: https://hdl.handle.net/2445/10550

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