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Optical, electrical, and photoelectric properties of nitrogen‐doped perovskite ferroelectric BaTiO 3 ceramics
Author(s) -
Long Peiqing,
Chen Chen,
Pang Dongfang,
Liu Xitao,
Yi Zhiguo
Publication year - 2019
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/jace.16026
Subject(s) - materials science , doping , ceramic , ferroelectricity , photoelectric effect , ferroelectric ceramics , perovskite (structure) , photoconductivity , band gap , absorption (acoustics) , electric field , optoelectronics , mineralogy , analytical chemistry (journal) , composite material , chemical engineering , dielectric , chemistry , organic chemistry , physics , quantum mechanics , engineering
Nitrogen‐doped BaTiO 3 (BT) ceramics were produced by the solid‐state reaction method in conjunction with ammonia gas treatment. The optical absorption spectra results show that the bandgap of BT ceramic is narrowed after N‐doping, suggesting that the N‐doping is an effective route to increase light absorption. Polar properties measurements indicate that the ferroelectricity of BT ceramic is well maintained after the N‐doping. In addition, the electric‐field–induced strain is prominently improved to ~0.8% after N‐doping, a value superior to that of PZT. Furthermore, the influence of N‐doping on photoelectric properties of BT ceramics was also investigated. Large increase in photoconductivity and fast response to light illumination conditions were observed in N‐doped BT ceramics. This work provides a novel route to enhance the (photo)electric properties of ferroelectric materials.