Abstract
PbTiO3 single crystals with SrO additive (<0.5wt%) were grown by a flux cooling technique. The electrical measurements were carried out by using as-grown crystals of PbTiO3 with 0.4wt% SrO. In summary, (1) The addition of SrO remarkably effected on the crystal size and the yield of PbTiO3. Especially, it was available for improving the crystal perfection of PbTiO3. (2) The resulting crystals was platelet (1.6×1.6×0.2mm) in shape and yellow-brown with highly transparent. (3) According to the X-ray diffraction, little change of axial ratio c/a was observed with increasing SrO content. (4) The arrhenius plot of σdc indicated that the conductivities were represented as the following equations; σ=3.1×103exp(-0.2/κT) [25°-150°C], σ=3.1×103exp(-1.5/κT) [150°-500°C]. (5) Above 300°C, the nonohmic behaviour was observed in the I-V characteristic curves. And the threshold value VH decreased with increasing temperature.
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