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Title: Quadratic tranverse anisotropy term due to dislocations in Mn12 acetate crystals directly observed by EPR spectroscopy
Author: Amigo, R.
Barco, Enrique del, 1968-
Casas i Duocastella, Lluís
Molins i Grau, Elies
Tejada Palacios, Javier
Rutel, I. B.
Mommounton, B.
Dalal, N.
Brooks, J.
Keywords: Acetats
Dislocacions en cristalls
Propietats magnètiques
Espectroscòpia de ressonància paramagnètica electrònica
Magnetic properties
Dislocations in crystals
Electron paramagnetic resonance spectroscopy
Issue Date: 2002
Publisher: The American Physical Society
Abstract: High-sensitivity electron paramagnetic resonance experiments have been carried out in fresh and stressed Mn12 acetate single crystals for frequencies ranging from 40 GHz up to 110 GHz. The high number of crystal dislocations formed in the stressing process introduces a E(Sx2-Sy2) transverse anisotropy term in the spin Hamiltonian. From the behavior of the resonant absorptions on the applied transverse magnetic field we have obtained an average value for E=22 mK, corresponding to a concentration of dislocations per unit cell of c=10-3.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review B, 2002, vol. 65, núm. 17, p. 172403-1-172403-4
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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