Structural and Optical Properties of La1−xSrxTiO3+δ

Materials

Lihong Gao²  Zhuang Ma¹  Song Wang²  Fuchi Wang² 

[1] School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;

关键词: perovskite structure;    La_1−xSr_xTiO_3+δ;    structural property;    reflectivity;   

DOI  :  10.3390/ma7074982

来源: mdpi

【 摘 要 】

La_1−xSr_xTiO_3+δ has attracted much attention as an important perovskite oxide. However, there are rare reports on its optical properties, especially reflectivity. In this paper, its structural and optical properties were studied. The X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and spectrophotometer were used to characterize the sample. The results show that with increasing Sr concentration, the number of TiO₆ octahedral layers in each “slab” increases and the crystal structure changes from layered to cubic structure. A proper Sr doping (x = 0.1) can increase the reflectivity, reaching 95% in the near infrared range, which is comparable with metal Al measured in the same condition. This indicates its potential applications as optical protective coatings or anti-radiation materials at high temperatures.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.