THE DIELECTRIC PROPERTY AND DEFECTS OF La-DOPED BaTiO3 CERAMICS | Zendy

Tang Chao-Qun | Zendy; Lihua Yu | Zendy

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THE DIELECTRIC PROPERTY AND DEFECTS OF La-DOPED BaTiO3 CERAMICS

Author(s) -

Tang Chao-Qun,

Lihua Yu

Publication year - 1996

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.45.1220

Subject(s) - materials science , doping , dielectric , permittivity , ceramic , dielectric permittivity , vacancy defect , dielectric loss , condensed matter physics , composite material , optoelectronics , physics

The dielectric permittivity of La-doped BaTiO3 ceramics exhibits reverse U-shape variation with increasing La-content in the range of 0.4 at% La, and with increasing frequency f it decreases quickly for f≤1000 Hz and changes very slowly for f>1000 Hz. These variations of dielectric property result from variation of defects due to doping La as follows: isolated Ba-vacancy ( V″Ba)→ associated defect (LaBa·V″Ba)→(LaBa·V″Ba·LaBa).

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