STILBAZOLIUM-MPS(3) NANOCOMPOSITES WITH LARGE 2ND-ORDER OPTICAL NONLINEARITY AND PERMANENT MAGNETIZATION

Intercalated layered materials comprising an organic dye and inorganic MPS3 [where M is either the manganese ion (Mn2+) or the cadmium ion ( Cd2+)] phases have been prepared. The intercalation process induces a spontaneous poling, giving rise to an efficiency of 750 times that of urea in second-harmonic generation for the cadmium derivative. In addi tion, the manganese derivative displays a permanent magnetization belo w 40 kelvin. Thus, these materials exhibit both a large optical nonlin earity and magnetic ordering.