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Title:	Crystal defects and spin tunneling in single crystals of Mn12 clusters
Author:	Hernández Ferràs, Joan Manel; Torres, F.; Tejada Palacios, Javier; Molins i Grau, Elies
Other authors:	Universitat de Barcelona
Abstract:	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.
Subject(s):	-Defectes cristal·lins -Efecte túnel -Propietats magnètiques -Magnetic properties -Crystals defects -Tunnel effect
Rights:	(c) The American Physical Society, 2002
Document type:	Article Article - Published version
Published by:	The American Physical Society
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