FORMATION OF PHTHALOCYANINE THIN FILM

PROBLEM TO BE SOLVED: To provide a good-quality orientation film having an optical anisotropy and a magnetic anisotropy by a method wherein an upper limit is set to the size of phthalocyanine pigment particles in a micelle dispersion liquid. SOLUTION: A micelle dispersion liquid consisting of a phthalocyanine pigment is prepared for forming phthalocyanine pigment particles into a thin film, this micelle dispersion liquid is electrolyzed in a magnetic field generated by a superconducting magnet and at that time, in the case where a tin oxide transparent electrode and a Pt plate are respectively used for an anode and a cathode, a phthalocyanine thin film is formed on the transparent electrode. At this time, the magnetic field is vertically applied to the electrode. As the phthalocyanine pigment having a diamagnetic anisotropy, which is used as stated above, a phthalocyanine compound, which is shown by the formula (The M shows a center metal or H2 .), and the like, including an X-type phthalocyanine pigment, are exemplified. As the center metal in the formula, Cu, Ni, Fe, Co, Cr, Ti, Be, Mo, W and the like are exemplified. The size of the phthalocyanine pigment particles, which are carried in the micelle dispersion liquid, is set in a size of 300 nm or smaller.