材料科学
四方晶系
电介质
正交晶系
拉曼光谱
钛酸钡
兴奋剂
相(物质)
分析化学(期刊)
微观结构
钙钛矿(结构)
矿物学
结晶学
晶体结构
化学
冶金
光学
光电子学
物理
有机化学
色谱法
作者
Md Sahanoor Islam,Jiten Ghosh
标识
DOI:10.1080/01411594.2023.2218004
摘要
BaTiO3-based materials are used as the replacement for lead-based perovskite materials for its wide dielectric applications. But the substitution of different doping elements in pure BaTiO3 drastically affects the microstructure, phase transition behavior and electrical properties. In the present work, local structure, phase transformation and dielectric behavior of BaCexTi1-xO3 (BCT) ceramics were studied for compositions x = 0.02, 0.05 and 0.1. A diffuse phase transition from orthorhombic to cubic via tetragonal in BCT with increasing Ce content was observed. An increase in particle size with Ce doping concentration was observed in FESEM images. Spherical and cuboid-shaped particle in the order of 80–150 nm was observed in transmission electron microscopic (TEM) images. RAMAN spectra confirm the tetragonal to cubic phase transition. Local structural and phase transformation behavior was obtained from laboratory-based PDF and XRD, respectively. Change in PDF was observed due to an increase in Ce doping. Dielectric properties decreased for Ce mole fraction of x = 0.1.
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