Optical evidences for an intermediate phase in relaxor ferroelectric Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals | Zendy

Xiaolong Zhang | Zendy; Jinzhong Zhang | Zendy; Guisheng Xu | Zendy; Kai Jiang | Zendy; Zhigao Hu | Zendy; Junhao Chu | Zendy

Open Access

Optical evidences for an intermediate phase in relaxor ferroelectric Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals

Author(s) -

Xiaolong Zhang,

Jinzhong Zhang,

Guisheng Xu,

Kai Jiang,

Zhigao Hu,

Junhao Chu

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4941936

Subject(s) - phase boundary , materials science , monoclinic crystal system , tetragonal crystal system , ferroelectricity , raman spectroscopy , phonon , photoluminescence , raman scattering , phase (matter) , condensed matter physics , polar , spectral line , crystallography , optics , crystal structure , dielectric , chemistry , physics , optoelectronics , organic chemistry , astronomy

The mechanism of low-temperature structural transformation and evolution of polar nano-structures in relaxor ferroelectric Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-xPbTiO3 (x = 0.33, 0.35, and 0.42) single crystals have been investigated with the aid of temperature dependent low-wavenumber Raman scattering (LWRS) and photoluminescence (PL) spectra. The E(TO1) phonon mode reveals the characteristic relaxational polarization fluctuations associated with the reorientation of either polar nano-regions or polar nano-domains. It was found that these mechanisms are not independent and they can be ascribed to the phonon localization. In addition, a short-range monoclinic phase (Mc) can be found below 250 K in the tetragonal phase region by LWRS, which is always associated with the morphotropic phase boundary (MPB) and excellent electromechanical properties. It is interesting that PL spectra confirm these results. The present work indicates that external field modulation and change of composition can result in the monoclinic phase and co-existence of multi-phase

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