Experimental determination of the dipolar field in Mn12-acetate

Details Experimental determination of the dipolar field in Mn12-acetate Experimental determination of the dipolar field in Mn12-acetate

2008-10-27

arxiv.org/abs/0810.4614v1

Physics

Condensed Matter

Other Condensed Matter

3 pages, 3 figures

Scientific paper

10.1103/PhysRevB.79.052404

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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