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arXiv · 0810.4614

Experimental determination of the dipolar field in Mn12-acetate

S. McHugh·R. Jaafar·M. P. Sarachik·Y. Myasoedov·H. Shtrikman·E. Zeldov·R. Bagai·G. Christou
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Abstract

Crystals of the molecular magnet Mn12-acetate are known to contain a small fraction of low- symmetry (minor) species with a small anisotropy barrier against spin reversal. The lower barrier leads to faster magnetic relaxation and lower coercive field. We exploit the low coercive fields of the minor species to make a direct determination of the dipole field in Mn12-ac. We find that the dipolar field of a fully magnetized crystal is 51.5 \pm 8.5 mT, consistent with theoretical expectations.

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S. McHugh, R. Jaafar, M. P. Sarachik, Y. Myasoedov, H. Shtrikman, E. Zeldov, R. Bagai, G. Christou. 2008-10-27. Experimental determination of the dipolar field in Mn12-acetate. https://doi.org/10.1103/physrevb.79.052404

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