Relaxor as heterophase fluctuation

A neutron diffuse scattering experiment on the relaxor ferroelectric PZN(PbZn 1/3 Nb 2/3 O 3 ) has been carried out. The diffuse scatterings show strongly anisotropic distributions around the reciprocal lattice points, whose patterns change drastically depending on the index of the reciprocal lattic...

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Bibliographic Details
Published in:Ferroelectrics 2000-01, Vol.240 (1), p.1629-1636
Main Authors: Yamada, Yasusada, Iwase, Takeshi, Fujishiro, Kouji, Uesu, Yoshiaki, Yamashita, Yohachi, Tomeno, Izumi, Shimanuki, Senji
Format: Article
Language:English
Subjects:
heterophase fluctuation
neutron diffuse scattering
relaxor
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Summary:A neutron diffuse scattering experiment on the relaxor ferroelectric PZN(PbZn 1/3 Nb 2/3 O 3 ) has been carried out. The diffuse scatterings show strongly anisotropic distributions around the reciprocal lattice points, whose patterns change drastically depending on the index of the reciprocal lattice point. These experimental results are analyzed based on the G-L type free energy functional including electrostrictive energy. It is verified that the observed diffuse scattering is due to the strain field produced by polar micro clusters which are characterized as the heterophase fluctuations of polarization.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150190008227991