Structural study of ceramic samples of the PbTiO3–BaTiO3–BaZrO3 system with a high PbTiO3 content studied by the Rietveld method

IF 0.9 4区 材料科学 Q3 CRYSTALLOGRAPHY Zeitschrift Fur Kristallographie-Crystalline Materials Pub Date : 2022-11-21 DOI:10.1515/zkri-2022-0028
Vladimir Sirotinkin, A. Bush, V. Kozlov
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Abstract

Abstract The xBa(Ti(1−y)Zry)O3–(1−x)PbTiO3 ceramic samples with x = 0.3, y = 0.95; x = 0.3, y = 0.7; x = 0.3, y = 0.3; x = 0.3, y = 0.05; x = 0.5, y = 0.05 were synthesized by a solid state reaction technique. The XRD patterns of these samples have anisotropic broadening of diffraction peaks. The crystallographic data were analyzed by the Rietveld method. During the refinement process the Stephens’s approach was used. All the samples studied are solid solutions with the tetragonal perovskite structure. The degree of tetragonal distortion of these solid solutions decreases with an increase in the Zr content. The microstructure analysis showed that the broadening of the diffraction peaks on the XRD patterns is due to both strains and small crystallite sizes.
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采用Rietveld法研究了高PbTiO3含量的PbTiO3 - batio3 - bazro3体系陶瓷样品的结构
摘要xBa(Ti(1−y)Zry)O3–(1−x)PbTiO3陶瓷样品的x=0.3,y=0.95;x=0.3,y=0.7;x=0.3,y=0.3;x=0.3,y=0.05;x=0.5、y=0.05。这些样品的XRD图谱具有衍射峰的各向异性加宽。用Rietveld方法对晶体学数据进行了分析。在细化过程中,使用了斯蒂芬斯的方法。所研究的所有样品都是具有四方钙钛矿结构的固溶体。这些固溶体的四方畸变程度随着Zr含量的增加而降低。微观结构分析表明,XRD图谱上衍射峰的加宽是由于应变和小晶粒尺寸造成的。
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来源期刊
CiteScore
2.00
自引率
16.70%
发文量
55
期刊介绍: Zeitschrift für Kristallographie – Crystalline Materials was founded in 1877 by Paul von Groth and is today one of the world’s oldest scientific journals. It offers a place for researchers to present results of their theoretical experimental crystallographic studies. The journal presents significant results on structures and on properties of organic/inorganic substances with crystalline character, periodically ordered, modulated or quasicrystalline on static and dynamic phenomena applying the various methods of diffraction, spectroscopy and microscopy.
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