A new type of organic magneto-optical material and device

Summary form only given. A many kind of magneto-optical devices have been developed with development of the optical communication and the optical information processing. New types of magneto-optical materials including inorganic and organic magneto-optical materials are being research for. It is well known that polyaniline is one of the most stable and valuable conducting polymer for applications at recent. But, the magneto-optical properties of polyaniline are rarely known and studied. It is demonstrated experimentally that the Faraday rotation angle is fine linear with the magnetic field intensity at low magnetic field (<4000 Gauss) and the Verdet constant is very high at some of wave length ranges. The Verdet contant of polyaniline film can be as high as 1x10/sup -4/ rad/A, which is higher than the Verdet constants of recently applied Faraday magneto-optical materials. The magneto-optical polyaniline film with different components can work at different ranges of wave length. The organic magneto-optical device fabricated with the polyaniline film can be applied in optical information Processing and as magneto-optical sensor, such as for the distant measurement of large current. Therefor, It can be said that polyaniline may be a new type of valuable organic magnetooptical material.