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Title: Pressure dependence of the monoclinic phase in (1–x)Pb(Mg1/3Nb2/3)O3-xPbTiO₃ solid solutions

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics

We combine high-pressure x-ray diffraction, high-pressure Raman scattering, and optical microscopy to investigate a series of (1–x)Pb(Mg1/3Nb2/3)O3-xPbTiO₃ (PMN-xPT) solid solutions (x=0.2, 0.3, 0.33, 0.35, 0.37, 0.4) in diamond anvil cells up to 20 GPa at 300 K. The Raman spectra show a peak centered at 380 cm⁻¹ starting above 6 GPa for all samples, in agreement with previous observations. X-ray diffraction measurements are consistent with this spectral change indicating a structural phase transition; we find that the triplet at the pseudocubic (220) Bragg peak merges into a doublet above 6 GPa. Our results indicate that the morphotropic phase boundary region (x=0.33–0.37) with the presence of monoclinic symmetry persists up to 7 GPa. The pressure dependence of ferroelectric domains in PMN-0.32PT single crystals was observed using a polarizing optical microscope. The domain wall density decreases with pressure and the domains disappear at a modest pressure of 3 GPa. We propose a pressure-composition phase diagram for PMN-xPT solid solutions.

Sponsoring Organization:
USDOE
OSTI ID:
1102591
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Vol. 86 Journal Issue: 22; ISSN 1098-0121
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

References (30)

Origin of morphotropic phase boundaries in ferroelectrics journal January 2008
Raman Scattering of 0.91Pb(Zn 1/3 Nb 2/3 )O 3 –0.09PbTiO 3 Relaxor Ferroelectric Single Crystals journal September 1999
Polarized Raman study of the phonon dynamics in Pb ( Mg 1 / 3 Nb 2 / 3 ) O 3 crystal journal September 2003
Effect of high pressure on the Pb ( Mg 1 3 Nb 2 3 ) O 3 Pb Ti O 3 solid solution: A Raman scattering investigation journal October 2004
Energy dispersive x-ray diffraction of charge density waves via chemical filtering journal June 2005
Raman Spectra of Amorphous Si and Related Tetrahedrally Bonded Semiconductors journal March 1971
High-pressure Raman study of zone-center phonons in PbTi O 3 journal December 1983
A universal equation of state for solids journal July 1986
Polarization rotation mechanism for ultrahigh electromechanical response in single-crystal piezoelectrics journal January 2000
Glassy polarization behavior in ferroelectric compounds and journal December 1983
High-pressure phases in highly piezoelectric PbZr 0.52 Ti 0.48 O 3 journal January 2004
Relaxor Ferroelectric Complex Perovskites: Structure, Properties and Phase Transitions journal February 1998
Lattice dynamics in PbMg 1 3 Nb 2 3 O 3 journal October 2004
Pressure-Induced Anomalous Phase Transitions and Colossal Enhancement of Piezoelectricity in PbTiO 3 journal July 2005
Raman-Scattering Selection-Rule Breaking and the Density of States in Amorphous Materials journal July 1970
Brillouin scattering and molecular dynamics study of the elastic properties of Pb ( Mg 1 3 Nb 2 3 ) O 3 journal April 2007
Pressure-Induced Suppression of the Diffuse Scattering in the Model Relaxor Ferroelectric P b M g 1 / 3 N b 2 / 3 O 3 journal June 2003
First-principles based atomistic modeling of phase stability in PMN– x PT journal October 2011
Ultrahigh strain and piezoelectric behavior in relaxor based ferroelectric single crystals journal August 1997
Short-range ordering in PbMg 1/3 Nb 2/3 O 3 journal November 1979
Local phenomena of ( 1 x ) PbMg 1 / 3 Nb 2 / 3 O 3 x PbTiO 3 single crystals ( 0 x 0.38 ) studied by Raman scattering journal May 2008
Effect of high pressure on relaxor ferroelectrics journal April 2002
Correlations between nanoscale chemical and polar order in relaxor ferroelectrics and the lengthscale for polar nanoregions journal August 2005
First-order Raman spectra of A B 1 2 B 1 2 O 3 double perovskites journal June 2005
High-pressure Raman scattering and x-ray diffraction of the relaxor ferroelectric 0.96 Pb ( Zn 1 3 Nb 2 3 ) O 3 0.04 PbTiO 3 journal April 2005
High-pressure Brillouin scattering of Pb ( Mg 1 / 3 Nb 2 / 3 ) O 3 journal April 2009
Phase diagram of the ferroelectric relaxor ( 1 x ) PbMg 1 / 3 Nb 2 / 3 O 3 x PbTiO 3 journal August 2002
Monoclinic and triclinic phases in higher-order Devonshire theory journal January 2001
Origin of diffuse scattering in relaxor ferroelectrics journal April 2010
Relaxor properties of compositionally disordered perovskites: Ba- and Bi-substituted Pb ( Zr 1 x Ti x ) O 3 journal June 2005

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