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Monte Carlo calculations on the magnetization profile and domain wall structure in bulk systems and nanoconstricitons

AuthorsSerena, P. A.; Costa Krämer, José Luis
Issue Date2001
PublisherSociedad Mexicana de Física
CitationRevista Mexicana de Fisica 47: 72-82 (2001)
AbstractA Monte Carlo algorithm suitable to study systems described by an anisotropic Heisenberg Hamiltonian is presented. This technique has been tested successfully with 3D and 2D systems, illustrating how magnetic properties depend on the dimensionality and the coordination number. We have found that magnetic properties of constrictions differ from those appearing in bulk. In particular, spin fluctuations are considerable larger than those calculated for bulk materials. In addition, domain walls are strongly modified when a constriction is present, with a decrease of the domain-wall width. This decrease is explained in terms of previous theoretical works.
Identifiersissn: 0035-001X
Appears in Collections:(IMN-CNM) Artículos
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