Bi0.5Na0.5Ti1-xCoxO3陶瓷的结构和电学性能研究
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国家自然科学基金资助项目(51172006)

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Evolution of Structure and Electric Properties of Bi0.5Na0.5TiO3 Ceramics with Co2O3 Doping
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    摘要:

    采用传统的固相法制备了(Bi0.5Na0.5)Ti1-xCoxO3 ( 0≤x≤0.015)无铅压电陶瓷。结果表明,BNT陶瓷表现出单斜结构Cc,并伴随Co的加入晶粒明显长大。同时,Co离子进入了钙钛矿结构的B位,形成硬性替代效应,晶格中形成氧空位,使BNT晶粒的内偏场上升,BNT陶瓷铁电性能的温度稳定性提高。

    Abstract:

    (Bi0.5Na0.5)Ti1-xCoxO3 ( 0≤x≤0.015) lead free piezoceramics were prepared by the conventional solid phase method. All the BNT specimens presented a monoclinic phase of Cc in crystal structure and the addition of Co caused a remarkably promoted grain growth. Simultaneously, Co cation enters into the B-site of the perovskite lattice, forming the hard doping effect, the oxygen vacancies in the lattice are generated, the internal bias field of BNT increased, and the temperature stabilization of BNT ferroelectricity is improved.

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秦子超,朱满康,侯育冬. Bi0.5Na0.5Ti1-xCoxO3陶瓷的结构和电学性能研究[J].压电与声光,2014,36(5):795-797. QIN Zichao, ZHU Mankang, HOU Yudong. Evolution of Structure and Electric Properties of Bi0.5Na0.5TiO3 Ceramics with Co2O3 Doping[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

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  • 在线发布日期: 2014-09-25
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