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2002

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/10884

Quadratic tranverse anisotropy term due to dislocations in Mn12 acetate crystals directly observed by EPR spectroscopy

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http://dx.doi.org/10.1103/PhysRevB.65.172403

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.

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Acetats, Dislocacions en cristalls, Anisotropia, Propietats magnètiques, Espectroscòpia de ressonància paramagnètica electrònica

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Magnetic properties, Acetates, Dislocations in crystals, Anisotropy, Electron paramagnetic resonance spectroscopy

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Articles publicats en revistes (Física de la Matèria Condensada)

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AMIGO, R., et al. Quadratic tranverse anisotropy term due to dislocations in Mn12 acetate crystals directly observed by EPR spectroscopy. Physical Review B. 2002. Vol. 65, num. 17, pags. 172403-1-172403-4. ISSN 0163-1829. [consulted: 7 of June of 2026]. Available at: https://hdl.handle.net/2445/10884

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