弛豫铁电(1-x)Pb(Sc/sub 1/2/Nb/sub 1/2/)O/sub 3/ - xPbTiO/sub 3/单晶的生长与表征

Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002. Pub Date : 2002-05-28 DOI:10.1109/ISAF.2002.1195964

Y. Bing, Z. Ye

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引用次数: 1

摘要

本文报道了复合钙钛矿(1-x)Pb(Sc/sub 1/2/Nb/sub 1/2/)O/sub 3/-xPbTiO/sub 3/ [PSNT]单晶的生长和表征，其组成接近MPB (x=0.425)。以(PbO + /spl δ /B/sub 2/O/sub 3/)体系为助熔剂，采用高温溶液法制备了PSNT晶体。通过分析生长晶体的缺陷和形貌，优化了生长参数和助熔剂体系，使生长晶体的质量有了明显的提高。偏振光显微镜的畴观察表明，PSNT57.5/42.5晶体在室温下具有非常复杂的对称性。通过x射线、介电和铁电测量对PSNT晶体进行了表征。

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Growth and characterization of relaxor ferroelectric (1-x)Pb(Sc/sub 1/2/Nb/sub 1/2/)O/sub 3/ - xPbTiO/sub 3/ single crystals

Growth and characterization of the single crystals of complex perovskite (1-x)Pb(Sc/sub 1/2/Nb/sub 1/2/)O/sub 3/-xPbTiO/sub 3/ [PSNT] with composition near the MPB (x=0.425) are reported in this paper. The PSNT crystals were grown by high temperature solution method using the (PbO + /spl delta/B/sub 2/O/sub 3/) system as flux. By analyzing the defects and morphology of the as-grown crystals, we have optimized the growth parameters and the flux system, leading to a significant improvement in the quality of crystal grown. Domain observation by polarized light microscopy reveals that the structure of the PSNT57.5/42.5 crystal has very complex symmetry at room temperature. The PSNT crystals have been characterized by means of the X-ray, dielectric and ferroelectric measurements.

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Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.

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