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Crystal defects and spin tunneling in single crystals of Mn12 clusters
Hernández Ferràs, Joan Manel; Torres, F.; Tejada Palacios, Javier; Molins i Grau, Elies
Universitat de Barcelona
The question addressed in this paper is that of the influence of the density of dislocations on the spin tunneling in Mn12 clusters. We have determined the variation in the mosaicity of fresh and thermally treated single crystals of Mn12 by analyzing the widening of low angle x-ray diffraction peaks. It has also been well established from both isothermal magnetization and relaxation experiments that there is a broad distribution of tunneling rates which is shifted to higher rates when the density of dislocations increases.
Defectes cristal·lins
Efecte túnel
Propietats magnètiques
Magnetic properties
Crystals defects
Tunnel effect
(c) The American Physical Society, 2002
Artículo - Versión publicada
The American Physical Society

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