A Study of Hydrothermal Synthesis and Properties of Rare Earth-modified PbTiO3 Fine Powders

Abstract

Abstract: Lead titanate ceramics fine powders modified with several rare earth (La, Pr, Nd,Sin, Eu) were prepared by hydrothermal method. The transformation between tetragonal(ferroelectric) phase and cubic (paraelectric) phase for the La-doped PbTiO₃ solid solutionwas investigated. Curie' temperature of the PTsolid solution with x(La)=0. 04 and y(Mn)=0. 01 was ca. 400 ℃. The dependences between rare earth-doping content and piezoelectricproperties of PTsolid solutions were determined. The d₃₃, increased, while g₃₃, k_t and k_t/k_pecreased with increasing rare earth-doping content in PTsolid solutions.

Key words: Lead titanate, Hydrothermal synthesis, Piezoelectric ceramics, Rare earth, Solid solution

CLC Number:

O614.43

TrendMD:

XIONG Rong, CHENG Hu-Min, MA Ji-Ming, CHEN Shou-Liu, ZHUANG Yong-Qiu, ZHANG Pei-Lin, ZHONG Wei-Lie. A Study of Hydrothermal Synthesis and Properties of Rare Earth-modified PbTiO₃ Fine Powders[J]. Chem. J. Chinese Universities, 1997, 18(10): 1580.

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A Study of Hydrothermal Synthesis and Properties of Rare Earth-modified PbTiO₃ Fine Powders

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