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Title: Successive Pressure-Induced Structural Transitions in Relaxor Lead Indium Niobate

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1212905
Resource Type:
Journal Article
Resource Relation:
Journal Name: Ferroelectrics; Journal Volume: 467; Journal Issue: (1) ; 2014
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Ahart, Muhtar, Kojima, Seiji, Yasuda, Naohiko, and Hemley, Russell J. Successive Pressure-Induced Structural Transitions in Relaxor Lead Indium Niobate. United States: N. p., 2015. Web. doi:10.1080/00150193.2014.932606.
Ahart, Muhtar, Kojima, Seiji, Yasuda, Naohiko, & Hemley, Russell J. Successive Pressure-Induced Structural Transitions in Relaxor Lead Indium Niobate. United States. doi:10.1080/00150193.2014.932606.
Ahart, Muhtar, Kojima, Seiji, Yasuda, Naohiko, and Hemley, Russell J. Mon . "Successive Pressure-Induced Structural Transitions in Relaxor Lead Indium Niobate". United States. doi:10.1080/00150193.2014.932606.
@article{osti_1212905,
title = {Successive Pressure-Induced Structural Transitions in Relaxor Lead Indium Niobate},
author = {Ahart, Muhtar and Kojima, Seiji and Yasuda, Naohiko and Hemley, Russell J.},
abstractNote = {},
doi = {10.1080/00150193.2014.932606},
journal = {Ferroelectrics},
number = (1) ; 2014,
volume = 467,
place = {United States},
year = {Mon Aug 24 00:00:00 EDT 2015},
month = {Mon Aug 24 00:00:00 EDT 2015}
}
  • The abnormal aging behavior, i.e., severe aging in the electric field induced piezoelectric coefficient while very weak dielectric aging, observed in the relaxor ferroelectric lead magnesium niobate-lead titanate (PMN-PT) ceramics under a dc electric bias field, can be significantly reduced by hot isostatic pressing (HIP) treatment on presintered samples. The aging can also be reduced by doping suitable amounts of either La (donor) or Mn (acceptor). We suggest that the reduction in the aging is due to the introduction of additional random fields into the material which reduces the probability of the growth of micropolar regions into metastable and/or stablemore » macropolar domains. The abnormal aging behavior and the effectiveness of HIP in reducing it indicate the importance of the elastic energy in controlling the aging and relaxor behavior in PMN-PT relaxor ferroelectrics. {copyright} {ital 1997 Materials Research Society.}« less
  • Cited by 38
  • The effect of A-site incorporated Ba{sup 2+} and Bi{sup 3+} on the pressure-driven structural transformations in Pb-based perovskite-type relaxor ferroelectrics has been studied with in situ x-ray diffraction and Raman scattering of PbSc{sub 0.5}Nb{sub 0.5}O{sub 3}, Pb{sub 0.93}Ba{sub 0.07}Sc{sub 0.5}Nb{sub 0.5}O{sub 3}, and Pb{sub 0.98}Bi{sub 0.02}Sc{sub 0.51}Nb{sub 0.49}O{sub 3} in the range from ambient pressure to 9.8 GPa. The substitution of Ba{sup 2+} for Pb{sup 2+} represents the case in which A-site divalent cations with stereochemically active lone-pair electrons are replaced by isovalent cations with a larger ionic radius and no active lone pairs, leading to formation of strong localmore » elastic fields. In contrast, substitution of Bi{sup 3+} for Pb{sup 2+} involves the replacement of divalent A-site cations with active lone-pair electrons by aliovalent cations with nearly the same ionic radius and active lone pairs so it induces local electric fields but not strong elastic fields. The two types of dopants have rather distinct effects on the changes in the atomic structure under pressure. The embedding of Ba{sup 2+} and associated elastic fields hinders the development of pressure-induced ferroic ordering and thus smears out the phase transition. The addition of Bi{sup 3+} enlarges the fraction of spatial regions with a pressure-induced ferroic distortion, resulting in a more pronounced phase transition of the average structure, i.e., the preserved lone-pair order and the absence of strong local elastic fields enhances the development of the ferroic phase at high pressure. For all compounds studied, the high-pressure structure exhibits glide-plane pseudosymmetry associated with a specific octahedral tilt configuration.« less
  • Changes in the electrostrictive coefficients Q{sub ij}, especially the volumetric coefficient, with temperature and bias field provides important information regarding the nature of the polarization in lead magnesium niobate based relaxor ferroelectrics. We show that the polarization response at temperatures near the dielectric constant maximum is mainly through the polar-vector reorientation of the nanopolar regions, as suggested by the polar glass model. As the temperature is lowered through the freezing transition, the polarization response is governed by the phase switching and intrinsic contributions rather than by the domain wall motions found in normal ferroelectrics. {copyright} {ital 1997 American Institute ofmore » Physics.}« less
  • Local antiferroelectric order of lattice distortion caused by an ionic size difference has been discovered in relaxor lead scandium niobate, Pb(Sc{sub 1/2}Nb{sub 1/2})O{sub 3} , using an x-ray diffuse scattering technique. This ordering nature is thought to produce a glassy motion of ions in response to an applied electric field. {copyright} {ital 1999} {ital The American Physical Society}