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Start Over Author "Wang, Hongni" Publisher elsevier bv
10 results on '"Wang, Hongni"'

4. An electrostatic repulsion strategy construct ZIFs based liquids with permanent porosity for efficient CO2 capture

Author

Li, Xiaoqian, primary, Wang, Dechao, additional, Ning, Hailong, additional, Xin, Yangyang, additional, He, Zhongjie, additional, Su, Fangfang, additional, Wang, Yudeng, additional, Zhang, Jing, additional, Wang, Hongni, additional, Qian, Liwei, additional, Zheng, Yaping, additional, Yao, Dongdong, additional, and Li, Mingtao, additional

Published
2021
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9. Dielectric properties of BZN ceramics doped with Ca 2+ in A/B-sites

Author

Ding Shihua, Wang Hongni, Song Tianxiu, and Peng Yong

Subjects
Valence (chemistry), Materials science, Solid solubility, Process Chemistry and Technology, Dielectric dispersion, Doping, Analytical chemistry, Mineralogy, Dielectric, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Solid state reaction method, Octahedron, visual_art, Materials Chemistry, Ceramics and Composites, visual_art.visual_art_medium, Ceramic
Abstract

Bi1.5ZnNb1.5O7 ceramics doped with Ca2+ in A-site and B-sites were prepared by the conventional solid state reaction method. The effect of Ca2+ doping on structure and dielectric properties has been investigated. The results showed that solid solubility of Ca2+ doping A-site, (Bi1.5−xCaxZn0.5)(Nb1.5Zn0.5)O7 (BCZN), was 0.25 mol, and B-site (Bi1.5Zn0.5)(Nb1.5−yCayZn0.5)O7 (BZNC) was 0.1 mol. With increasing Ca2+ content, the dielectric dispersion behavior of the BCZN and BZNC ceramics was qualitatively similar. The dielectric peak shifted to lower temperature in the case of A-sites doping (BCZN), while higher temperature in the case of B-sites doping (BZNC). In the same case of Ca2+ content, compared with A-site doping (BCZN), an decreasing dielectric relaxation for B-site doping (BZNC) occurs, which is attributed to the larger the bond valence sums (AVs) of O′ for B-site doped ceramics than A-site doped ceramics. The dielectric relaxation degree of BZN ceramics is closely related to the change from perfect octahedral to regular cube.

Published
2017

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