Abstract
Single crystals of Pb[(Zn 1/3Nb 2/3) 0.91Ti 0.09]O 3 (PZNT91/9) were grown by a modified flux Bridgman method with an allomeric seed crystal. To reduce the formation of pyrochlore phase during crystal growth, we use B-site precursor synthesis method to presynthesize the raw materials. X-ray powder diffraction results of the pre-and-post-calcined powders and of the obtained PZNT91/9 crystals show that B-site precursor synthesis method can effectively prevent the formation of pyrochlore phase and the as-grown crystals are of pure perovskite structure. We measured the electrical properties of the obtained PZNT91/9 crystals and compared with those grown by other techniques. The results show that the electrical properties are as well as or better than the Vertical Bridgman method PZNT91/9 single crystals and the Conventional Flux method. The above discussions demonstrate that homogeneous raw powder morphology and fine distribution of particle size can greatly improve the quality of the obtained crystals.
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