拉曼光谱
结构精修
四方晶系
材料科学
粒度
微观结构
晶粒生长
相(物质)
钙钛矿(结构)
压电
分析化学(期刊)
结晶学
矿物学
晶体结构
复合材料
化学
光学
有机化学
物理
作者
Vijayeta Pal,O. P. Thakur,R. Dwivedi
标识
DOI:10.1016/j.jallcom.2018.01.152
摘要
The present work reports the synthesis of Lead free (Ba1-xCax)(ZryTi1-y)O3 with x = 0.13, y ≤ 0.15 (i.e. BCTZ) piezoceramics by semi-wet route and effect of additives viz., Ca2+, and Zr4+ on phase formation, microstructure, piezoelectric and electromechanical properties. Detailed structural analysis suggests the formation of tetragonal perovskite phase with P4mm symmetry, which was also confirmed by Rietveld refinement and Raman spectra. SEM micrographs showed that the average grain size decreased with Zr4+ which acts as grain growth inhibitor. Composition with x = 0.13 and y = 0.10 exhibited the optimum piezoelectric and electromechanical properties (d33 = 367 ± 2 pC/N and kp = .39 ± 0.01) and showed higher densification (relative density ∼ 98%).
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