Ba_3Ce_3Ti_5Nb_5O_(30)―a novel ceramic oxide semiconductor

摘要

A novel ceramic oxide semiconductor Ba_3Ce_3Ti_5Nb_5O_(30) was prepared by solid state route. XRD shows that it has tetragonal tungsten bronze-type crystalline structure. The electrical conductivity at 30℃ is 3.49 x 10~(-4) ohm~(-1) cm~(-1) and at 600℃ is 1.2 x 10~(-2) ohm~(-1) cm~(-1). The activation energy of the carriers has been found to be 0.41 eV Ce~(+3) and is probably structurally stabilized in this compound.