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- Title
ESCAPE RATE TRANSITIONS IN THE Fe<sub>8</sub> MOLECULAR MAGNET WITH FOURTH-ORDER TRANSVERSE ANISOTROPY.
- Authors
Chang-Soo Park
- Abstract
We study escape rate transitions in the Fe8 molecular magnet with fourth-order transverse anisotropy in the presence of an external field perpendicular to the easy axis. Direct numerical diagonalization has been employed to investigate the transition type and the transition temperature T0. We find that the first-order transition as well as the second-order transition can exist when the field is applied along the hard axis, while only the second-order transition appears for the field along the medium axis. It is also observed that the transition temperature is increased due to fourth-order transverse anisotropy.
- Subjects
MAGNETIC testing; MAGNETIC measurements; TRANSITION temperature; MAGNETISM -- Experiments; MAGNETICS; ANISOTROPY; PROPERTIES of matter
- Publication
Modern Physics Letters B, 2004, Vol 18, Issue 7/8, p291
- ISSN
0217-9849
- Publication type
Article
- DOI
10.1142/S0217984904006901