Quantum spin tunneling of magnetization in small ferromagnetic particles
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Data
2009-04-01
Autores
Galetti, Diogenes [UNESP]
Pimentel, B. M. [UNESP]
Lima, C. L.
Silva, E. C. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
An approach is presented that can also account for the description of small ferromagnetic particle magnetization tunneling. An estimate of the saturation value of an external applied magnetic field along the easy axis is obtained. An analytic expression for the tunneling factor in the absence of an external magnetic field is deduced from the present approach that also allows one to obtain the crossover temperature characterizing the regime where tunneling is dominated by quantum effects. (C) 2009 Published by Elsevier B.V.
Descrição
Palavras-chave
Spin tunneling, Small ferromagnetic particles
Como citar
Physica A-statistical Mechanics and Its Applications. Amsterdam: Elsevier B.V., v. 388, n. 7, p. 1105-1110, 2009.