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Type: Artigo de periódico
Title: A Monte Carlo model of the MCD behavior of hematite colloids
Author: de Castro, ARB
Zysler, RD
Abstract: We made Monte Carlo simulations of the energy distribution and magnetic moment contributions of surface and core sites in a model particle of spherical shape, intended as a simple representation of hematite colloids. We included exchange interactions between nearest neighbors, plus anisotropy and Zeeman energy terms. Model particles built with origin between lattice sites show a temperature dependence of magnetization consistent with previous measurements and explain the puzzling results of magnetic circular dichroism in samples of nanostructured hematite recently obtained with synchrotron radiation. (C) 2002 Elsevier Science B.V. All rights reserved.
Subject: hematite
magnetic circular dichroism
Monte Carlo
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0304-8853(02)00985-X
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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