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Type: Artigo de periódico
Title: Cylindrical magnetization model for glass-coated microwires with circular anisotropy: Statics
Author: Torrejon, J
Thiaville, A
Adenot-Engelvin, AL
Vazquez, M
Acher, O
Abstract: The static magnetization profile of glass-coated microwires with effective circular anisotropy is investigated using micromagnetics. In this family of microwires, the ferromagnetic nucleus with an amorphous character presents amagnetic structure composed of an inner region with axial domains and an outer region with circular domains, due to magnetoelastic anisotropy. A one-dimensional micromagnetic model is developed, taking into account both the exchange and magnetoelastic anisotropy energies, and solved quasi analytically. The total energy, magnetization profiles and magnetization curves are investigated as a function of radius and anisotropy constant of the nucleus. This work represents a fundamental study of the magnetization process in these amorphous microwires and provides guidelines for the production of microwires with tailored magnetic properties. En passant, the nucleation problem in an infinite cylinder, introduced by W. F. Brown, is revisited. (C) 2010 Elsevier B.V. All rights reserved.
Subject: Glass-coated microwire
Micromagnetic model
Circular anisotropy
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.jmmm.2010.09.018
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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