RHOMBOHEDRAL PHASE PYROELECTRIC RELAXATION FERROELECTRIC SINGLE CRYSTAL MATERIAL AND PREPARATION METHOD THEREFOR

摘要

Provided is (1‐x‐y)Pb(In^1/2Nb_1/2)O₃‐yPb(Mg_1/3Nb_2/3)O₃‐xPbTiO₃, which is doped with Mn and Fe and prepared using an improved Bridgman method, wherein 0.15≤1‐x‐y≤0.38, 0.36≤y≤0.57, and 0.26≤x≤0.30, the crystallographic direction is [111], and the Curie temperature thereof is improved greatly compared with that of a relaxation ferroelectric single crystal (1-x)Pb(Mg_1/3Nb_2/3)O₃-xPbTiO₃ which is doped with Mn.