Electronic structure, optical and chemical bonding properties of strontium doped Barium Titanate

被引：13

作者：

Sasikumar, S. ^{[1
]}

Saravanakumar, S. ^{[1
]}

Bahadur, S. Asath ^{[1
]}

Sivaganesh, D. ^{[1
]}

机构：

[1] Kalasalingam Acad Res & Educ, Int Res Ctr, Dept Phys, Multifunct Mat Lab, Krishnankoil 626126, Tamil Nadu, India

来源：

OPTIK | 2020年 / 206卷

关键词：

Rietveld refinement; Perovskite; Optical properties; Crystal; Structure; Electron density; Bonding nature; CERAMICS; MICROSTRUCTURE; REFINEMENT; CRYSTAL;

D O I：

10.1016/j.ijleo.2019.163752

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, Strontium doped Barium Titanate (Ba1-xSrxTiO3 (x = 0.00, 0.05, 0.1)) ceramic solid solutions were synthesized by high temperature conventional solid state sintering process. Rietveld profile refinement was done by PXRD data and the synthesized samples were crystallized by perovskite type-tetragonal structure without additional phase. Powder X-ray diffraction studies were used to investigate the structural and chemical bonding properties of the constituent atoms through electron density distribution. The chemical bonding between Ba and 0 ions and Ti and 0 ions possess ionic and covalent in nature, respectively. E-gap values evaluated from UV-vis absorption spectra. Scanning electron microscopic images showed that the particles with regular shapes and well defined clear grain boundaries. The phase purity of the samples is confirmed by EDS qualitative spectral analysis.

引用

页数：8

共 18 条

[1] ELECTRON-DENSITY IMAGES FROM IMPERFECT DATA BY ITERATIVE ENTROPY MAXIMIZATION [J].