Dielectric properties and phase transitions of [Pb(Zn1/3Nb2/3)O3]0.905(PbTiO3)0.095: Influence of pressure

dc.contributor.authorSamara, G.A.
dc.contributor.authorVenturini, E.L.
dc.contributor.authorSchmidt, V. Hugo
dc.date.accessioned2016-04-19T00:08:14Z
dc.date.available2016-04-19T00:08:14Z
dc.date.issued2001-04-18
dc.description.abstractStudies of the influences of temperature, hydrostatic pressure, dc biasing field, and frequency on the dielectric constant (ɛ′) and loss (tanδ) of single crystal [Pb(Zn1/3Nb2/3)O3]0.905(PbTiO3)0.095, or PZN-9.5 PT for short, have provided a detailed view of the ferroelectric (FE) response and phase transitions of this technologically important material. While at 1 bar, the crystal exhibits on cooling a cubic-to-tetragonal FE transition followed by a second transition to a rhombohedral phase, pressure induces a FE-to-relaxor crossover, the relaxor phase becoming the ground state at pressures ⩾5 kbar. Analogy with earlier results suggests that this crossover is a common feature of compositionally disordered soft mode ferroelectrics and can be understood in terms of a decrease in the correlation length among polar domains with increasing pressure. Application of a dc biasing electric field at 1 bar strengthens FE correlations, and can at high pressure restabilize the FE response. The temperature-pressure and temperature-electric field phase diagrams were established. In the absence of dc bias the tetragonal phase vanishes at high pressure, the crystal exhibiting classic relaxor behavior. The dynamics of dipolar motion and the strong deviation from Curie-Weiss behavior of the susceptibility in the high-temperature cubic phase are discussed.en_US
dc.identifier.citationG.A. Samara, E.L. Venturini, and V.H. Schmidt, “Dielectric properties and phase transitions of [Pb(Zn1/3Nb2/3)O3]0.905(PbTiO3)0.095: Influence of pressure,” Phys. Rev. B 63, 184104 (2001).en_US
dc.identifier.issn1098-0121
dc.identifier.urihttps://scholarworks.montana.edu/handle/1/9707
dc.titleDielectric properties and phase transitions of [Pb(Zn1/3Nb2/3)O3]0.905(PbTiO3)0.095: Influence of pressureen_US
dc.typeArticleen_US
mus.citation.extentfirstpage184104en_US
mus.citation.issue18en_US
mus.citation.journaltitlePhysical Review Ben_US
mus.citation.volume63en_US
mus.data.thumbpage3en_US
mus.identifier.categoryChemical & Material Sciencesen_US
mus.identifier.categoryPhysics & Mathematicsen_US
mus.identifier.doi10.1103/PhysRevB.63.184104en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentPhysics.en_US
mus.relation.universityMontana State University - Bozemanen_US

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