Broadband light scattering of two relaxation processes in relaxor ferroelectric0.93Pb(Zn1/3Nb2/… | Zendy

Shinya Tsukada | Zendy; Seiji Kojima | Zendy

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Broadband light scattering of two relaxation processes in relaxor ferroelectric0.93Pb(Zn1/3Nb2/…

Author(s) -

Shinya Tsukada,

Seiji Kojima

Publication year - 2008

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.78.144106

Subject(s) - physics , condensed matter physics , phonon , ferroelectricity , relaxation (psychology) , nuclear magnetic resonance , dielectric , quantum mechanics , psychology , social psychology

Dynamical properties of relaxor ferroelectric 0.93Pb(Zn1/3Nb2/3)O3-0.07PbTiO3 single crystals have been studied by the broadband inelastic light scattering from gigahertz to terahertz frequency range. The longitudinal- and transverse-acoustic (LA and TA) phonon frequencies deviate below the Burns temperature TB=736 K from a linear temperature dependence above TB, indicating the existence of polarization relaxations induced by the polar nanoregions (PNRs). On further cooling, a central peak (CP) which originates from the relaxations in the PNRs is observed clearly below 600 K

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