Field-dependent anisotropy change in a supramolecular Mn(II)- [3 x 3] grid.
The magnetic anisotropy of a novel Mn(II)- [3x3] grid complex was investigated by means of high-field torque magnetometry. Torque vs field curves at low temperatures demonstrates a ground state with S>0 and exhibits a torque step due to a field-induced level crossing at B(*) approximately 7.5 T, accompanied by an abrupt change of magnetic anisotropy from easy-axis to hard-axis types. These observations are discussed in terms of a spin Hamiltonian formalism.
Waldmann
O
O
Physikalisches Institut III, Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany. waldmann@physik.uni-erlangen.de
Zhao
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L
Thompson
L K
LK