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Ferroelectrics Volume 261, 2001 - Issue 1
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Session C: Relaxor ferroelectrics

Structure and implication of morphotropic phase boundary for Pb(Mg1/3Nb2/3)O3-PbTiO3 ferroelectric ceramics

Kepi Chen State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R., China
,
Xiaowen Zhang State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R., China
,
Fei Fang Department of Engineering Mechanics, Tsinghua University, ibid.
&
Jun Wang Beijing Synchrotron Radiation Lab., Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918(2-7), 100039
Pages 155-160 | Received 03 Aug 2001, Published online: 25 Oct 2011
 
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Abstract

The structure of Pb(Mg1/3Nb2/3)O3-PbTiO3 ferroelectric ceramics in the vicinity of its morphotropic phase boundary (MPB) was studied by using both high-resolution and synchrotron x-ray diffraction experiments. Fitting of the (200) and (111) diffraction lines for (1−x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (x = 0.31, 0.32) ceramics reveal that there are two phases, tetragonal and pseudo-cubic phases, coexisted in the sample, and the composition of the constitutive phases changes with PT content. The implication of the MPB was discussed.

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