INTERCALATION OF FUNCTIONAL ORGANIC-MOLECULES INTO COPPER(II) MAGNETIC-MATERIALS

(i) The magnetic properties of the series of a layered material, Cu-2( OH)(3)(n-CmH2m+1COO), are found to show an anomalous change, depending on the alkyl-chain length: the m=0 and 1 materials are metamagnetic w hile the m=7-9 materials become weak ferromagnets below 22 K. Further, 4-phenylazobenzoate and 2-anthracene carboxylate, which are derivativ es of well-known photo-functional molecules, are intercalated into the copper hydroxides. The obtained materials are both antiferromagnetic in the whole temperature range of 3-280 K, However, the photochemical reactions do not take place by irradiation with a xenon lump. (ii) The magnetic properties of the layered perovskite ferromagnets (p-cyanoan ilinium(+))(2)CuCl42- and (p-chloroanilinium(+))(2)CuBr42- are studied under hydrostatic high pressure of 1.0 GPa. Above T-c, they show an i ncrease of the magnetization, which would due to enhancement of the fe rromagnetic coupling, but, below T-c, they show different magnetic res ponse to the pressure.