Sol - gel synthesis method was used to prepare lanthanum doped Bismuth Titanate BLT ceramics. Structural properties of BLT ceramics were studied by X - ray analysis (XRD). Rietveld refinement of the BLT ceramics was carried out. Microstrain, domain size and density of dislocation were calculated by Williamson Hall (WH) plot method. Microstructural properties were studied by scanning electron microscopy (SEM) and it has been found that the grain size decreases with La³⁺ modification in bismuth titanate. Dielectric, impedance and ferroelectric properties of BLT ceramics have been investigated.

中文翻译：

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通过溶胶-凝胶合成制备的La ³⁺改性钛酸铋（BLT）：结构，介电，阻抗和铁电研究

采用溶胶-凝胶合成法制备了镧掺杂的钛酸铋BLT陶瓷。通过X射线分析（XRD）研究了BLT陶瓷的结构性能。对BLT陶瓷进行了Rietveld精制。通过Williamson Hall（WH）绘图法计算微应变，畴尺寸和位错密度。通过扫描电子显微镜（SEM）研究了显微组织性能，发现钛酸铋中的La ³⁺修饰使晶粒尺寸减小。已经研究了BLT陶瓷的介电，阻抗和铁电性能。