Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (10): 1930.

• Articles • Previous Articles     Next Articles

Synthesis of Plate-like K0.5Bi0.5TiO3 Particles by Topochemical Method

ZHANG Yang-Hong1,2, ZENG Jiang-Tao1*, LI Guo-Rong1, ZHENG Liao-Ying1, YIN Qing-Rui1   

  1. 1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2008-11-07 Online:2009-10-10 Published:2009-10-10
  • Contact: ZENG Jiang-Tao. E-mail: zjt@mail.sic.ac.cn
  • Supported by:

    国家“九七三”计划(批准号: 2009CB623305)及国家自然科学基金(批准号: 50702068, 50675218)资助.

Abstract:

Plate-like K0.5Bi0.5TiO3 particles were successfully fabricated by topochemical method from bismuth layer-structured ferroelectric (BLSF) Bi4Ti3O12. Owing to its highly anisotropic structure, plate-like Bi4Ti3O12 was firstly synthesized in the KCl flux. The plate-like Bi4Ti3O12 was reacted with the complementary K2CO3 and TiO2, finally transformed to perovskite K0.5Bi0.5TiO3 particles and maintained its morphology nearly unchanged. Our result suggested the size of the plate-like particles is 15—20 μm in length and 2 μm in thickness. The mechanism of the reaction was analyzed according to the results. The KBT particles prepared in this experiment can be used as the template to prepare textured (Na, K)0.5Bi0.5TiO3 ceramics by (Reactive) Template Grain Growth method, inducing the grain orientation and thus enhance the properties.

Key words: Topochemical method; Perovskite; Anisotropic; K0.5Bi0.5TiO3

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