Abstract
Metal halide-based layered perovskites, (RNH3)2MCl4, self-organized organic/inorganic multilayer structure were synthesized, where R is a simple alkylammonium molecule with a long chain length, (CH3(CH2)17) or a l-methyl-naphthalene (C10H9CH2), M is 3d transition metal elements. Its layered pcrovskite structure was checked by a FT-IR method. The perovskites of CH3(CH2)17NH3 with Cu and Cr showed ferromagnetism (TC= 10 K and 42 K, respectively), and Mn and Fe antifcrromagnetism (TN=41 K and 95 K, respectively). These results roughly corresponded to the results for methyl and ethyl ammonium complexes reported. The naphthlene complex with Cu also showed ferromagnetism, however, the Curie temperature became low. It was considered that the relative large chromophore might disturb the Jahn-Teller distortion of CuCl6 octahedra. l-methyl-naphthylamine- hydrochloride was luminous with the wavelength of 350 nm under ultraviolet light irradiation, but its Cu complex was quenched.
