Dielectric Relaxation of La 3+ ‐Modified Bi 3 TiNbO 9  Aurivillius Phase Ceramics | Zendy

Zhou Zhiyong | Zendy; Dong Xianlin | Zendy; Huang Shiming | Zendy; Yan Haixue | Zendy

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Dielectric Relaxation of La 3+ ‐Modified Bi 3 TiNbO 9 Aurivillius Phase Ceramics

Author(s) -

Zhou Zhiyong,

Dong Xianlin,

Huang Shiming,

Yan Haixue

Publication year - 2006

Publication title -

journal of the american ceramic society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.9

H-Index - 196

eISSN - 1551-2916

pISSN - 0002-7820

DOI - 10.1111/j.1551-2916.2006.01166.x

Subject(s) - aurivillius , materials science , dielectric , ceramic , relaxation (psychology) , ferroelectric ceramics , condensed matter physics , polarization (electrochemistry) , phase (matter) , ferroelectricity , analytical chemistry (journal) , mineralogy , nuclear magnetic resonance , chemistry , composite material , physics , optoelectronics , organic chemistry , psychology , social psychology , chromatography

Single Aurivillius phase Bi 3− x La x TiNbO 9 (LBTN‐ x , x =0.00, 0.50, 0.75, and 1.00) ceramics were prepared by the conventional solid‐state reaction method. When x ≤0.50, the ceramics are normal ferroelectrics, while LBTN‐0.75 and LBTN‐1.00 showed typical relaxor behavior, which could probably be attributed to the disordering induced by the La 3+ partly substituting for Bi 3+ in Bi 2 O 2 layers. The dielectric relaxation of LBTN‐0.75 and LBTN‐1.00 were fitted using the Vögel–Fulcher relationship, and the results suggest that both of them are analogous to a spin glass with thermally activated polarization fluctuations above a freezing temperature.

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