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Pressure‐induced ferroelectric to antiferroelectric phase transformation in porous PZT95/5 ceramics
Author(s) -
Zeng T.,
Dong X. L.,
He H. L.,
Chen X. F.,
Yao C. H.
Publication year - 2007
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200622550
Subject(s) - antiferroelectricity , materials science , porosity , ceramic , ferroelectricity , phase (matter) , hydrostatic pressure , ferroelectric ceramics , transformation (genetics) , composite material , mineralogy , thermodynamics , chemistry , dielectric , organic chemistry , biochemistry , physics , optoelectronics , gene
Abstract The hydrostatic pressure‐induced ferroelectric to antiferroelectric (FE–AFE) phase transformation of PZT95/5 ceramics was investigated as a function of porosity, pore shape and pore size. FE–AFE phase transformations were more diffuse and occurred at lower hydrostatic pressures with increasing porosity. The porous PZT95/5 ceramics with spherical pores exhibited higher transformation pressures than those with irregular pores. Moreover, FE–AFE phase transformations of porous PZT95/5 ceramics with polydisperse irregular pores were more diffuse than those of porous PZT95/5 ceramics with monodisperse irregular pores. The relation between pore structure and hydrostatic pressure‐induced FE–AFE transformation was established according to stress concentration theory. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)