Paper Title:
Fractal Geometry and Properties of Doped BaTiO3 Ceramics

Taking into account that the complex grain structure is difficult to describe by using traditional analytical methods, in this study, in order to establish ceramic grain shapes of sintered BaTiO3, new approach on correlation between microstructure and properties of doped BaTiO3 ceramics based on fractal geometry has been developed. BaTiO3 ceramics doped with various dopants (MnCO3, Er2O3, Yb2O3) were prepared using conventional solid state procedure, and were sintered at 1350oC for four hours. The microstructure of sintered specimens was investigated by SEM-5300. Using method of fractal modeling a reconstruction of microstructure configurations, like grains shapes, or intergranular contacts has been successfully done. Furthermore, the area of grains surface was calculated using fractal correction that expresses the irregularity of grains surface through fractal dimension. The presented results, indicate that fractal method for ceramics structure analysis provides a new approach for describing, predicting and modeling the grain shape and relations between the BaTiO3-ceramic structure and dielectrical properties.

Edited by
Pietro VINCENZINI, Vojislav V. MITIC, Alois LOIDL and Dino FIORANI
V.V. Mitic, V.B. Pavlovic, L. Kocic, V. Paunovic, L. Zivkovic, "Fractal Geometry and Properties of Doped BaTiO3 Ceramics", Advances in Science and Technology, Vol. 67, pp. 42-48, 2010
Online since
October 2010
Authors: Long Tu Li, Tian Wang, Xiao Hui Wang, Jing Chang Zhao, Xian Li
Abstract:Dielectric characteristics of strontium titanate based ceramics doped with samarium were investigated within temperature range from –60oC to...
Authors: Uraiwan Intatha, Sukum Eitssayeam, Kamonpan Pengpat, Gobwute Rujijanagul, Tawee Tunkasiri
Abstract:In this work, preparation conditions and effect of ZrO2 doped BaFe0.5Nb0.5O3 ceramics were studied. Relationship between structure and...
Authors: Xin You Huang, Chun Hua Gao, Zhi Gang Chen
Authors: Yun Xia Zhang, Jun Jie Hao, Jun Ting Qi
Building Materials
Abstract:In this paper, the effect of Nb2O5 on the microstructure and dielectric properties of BaTiO3-based ceramics...
Authors: Rong Xia Huang, Yu Zhen Zhao, Yong Jie Zhao, Rong Zheng Liu, He Ping Zhou
Abstract:Lead-free K0.5Na0.5NbO3-xwt% (0.4ZnO-0.6B2O3) ceramics were synthesized by...