MOLECULAR MAGNETIC MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a molecular magnetic material which has a very strong coercive force and enables a spin flop transition when the material is exposed to light by giving crystallomagnetic anisotropy in which the interaction between spins in a one-dimensional spin arranging direction is contrary to that in an axis crossing the arranging direction to the material. SOLUTION: A single-crystal body is obtained by causing a slow reaction between manganese II-meso-tetraphenyl porphyrin (MnII (TPP)) pyridine and tetracyanoethylene (TCNE) as a toluen solution. The MnTPP-TCNE single crystal is obtained in the form of a planar crystal. The MnTPP and TCNE are alternately arranged in the a-axis direction and the trans-position cyano- group is weakly coordinated in manganese. In the magnetization curves of this crystal, the curve in the a-axis direction is largely different from the other two curves and has a very high linearity.