Electric field induced monoclinic phase stability in Ca doped Na0.5Bi0.5TiO3: Case of 0.93Na0.5Bi0.5 TiO3 – 0.07CaTiO3 ferroelectric ceramics | Zendy

Roy Roukos | Zendy; Nicolas Geoffroy | Zendy; Denis Chaumont | Zendy

Open Access

Electric field induced monoclinic phase stability in Ca doped Na0.5Bi0.5TiO3: Case of 0.93Na0.5Bi0.5 TiO3 – 0.07CaTiO3 ferroelectric ceramics

Author(s) -

Roy Roukos,

Nicolas Geoffroy,

Denis Chaumont

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4972284

Subject(s) - ferroelectricity , monoclinic crystal system , phase boundary , materials science , electric field , condensed matter physics , ferroelectric ceramics , doping , phase transition , polarization (electrochemistry) , ceramic , phase (matter) , dielectric , crystallography , crystal structure , chemistry , optoelectronics , physics , composite material , organic chemistry , quantum mechanics

The ferroelectric perovskite complex 0.93Na0.5Bi0.5TiO3 – 0.07CaTiO3 (NBT –0.07CT) ceramics were studied by a simple X-ray diffraction upon application of an increasing electric field. It is shown that the field induced rhombohedral (R3c) to monoclinic (Cc) phase transition at room temperature. This induced phase is stable after removal the electric field. Our results has been interpreted by intrinsic polarization rotation theory, in comparison with Pb-base system such as PMT-PT, PZN-PT, …near the morphotropic phase boundary (MPB) region. Apparently, the NBT – 0.07CT pretends to have a ferroelectric and structural instability around room temperature

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