Determination of the magnetic anisotropy axes of single-molecule magnets
W. Wernsdorfer, N. E. Chakov, and G. Christou
TL;DR
This paper introduces simple methods to determine the magnetic anisotropy axes of single-molecule magnets, providing more precise measurements of easy axis tilts than previous high-frequency EPR studies.
Contribution
The paper presents new straightforward techniques for accurately determining magnetic anisotropy axes in single-molecule magnets, improving upon prior methods.
Findings
Upper bound of easy axis tilts in Mn12-Ac determined
Values are smaller than those from HF-EPR studies
Methods offer improved precision in anisotropy axis determination
Abstract
Simple methods are presented allowing the determination of the magnetic anisotropy axes of a crystal of a single-molecule magnet (SMM). These methods are used to determine an upper bound of the easy axis tilts in a standard Mn12-Ac crystal. The values obtained in the present study are significately smaller than those reported in recent high frequency electron paramagnetic resonance (HF-EPR) studies which suggest distributions of hard-axes tilts.
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