The structural and optical properties of the powder were studied carefully with XRD, SEM, FTIR, Raman and UV-Vis measurements. At optimized annealing temperature (from 900 oC to 1000 oC), the synthesized STO nano particles have a good structure. The shape, size and optical band gap of the obtained material are suitable for further applications. | Communications in Physics, Vol. 27, No. 2 (2017), pp. 173-179 DOI: STRUCTURAL AND OPTICAL PROPERTIES OF SrTiO3 NANO MATERIAL OBTAINED BY SOL-GEL METHOD DOAN THI THUY PHUONG1,† , NGUYEN XUAN HUY2 , LE THI MAI OANH2,3 , DO DANH BICH3 AND TRIEU THI MINH CHAU1 1 Faculty of Basic Sciences, University of Transport and Communications, 3 Cau Giay Road, Dong Da District, Hanoi, 100000, Vietnam 2 Center for Nano Science and Technology, Hanoi University of Education, 136 Xuan Thuy Road, Cau Giay District, Hanoi, 100000, Vietnam 3 Department of Physics, Hanoi National University of Education, 136 Xuan Thuy Road, Cau Giay District, Hanoi, 100000, Vietnam † E-mail: phuongthuydoan@ Received 01 April 2017 Accepted for publication 17 July 2017 Published 31 July 2017 Abstract. SrTiO3 (STO) nano particles were prepared by sol-gel process in order to optimize the temperature condition suited for obtaining good quality materials for different applications. The thermal treating condition was selected out through XRD, FTIR and Raman analyses of the synthesized powder. The structural and optical properties of the powder were studied carefully with XRD, SEM, FTIR, Raman and UV-Vis measurements. At optimized annealing temperature (from 900 o C to 1000 o C), the synthesized STO nano particles have a good structure. The shape, size and optical band gap of the obtained material are suitable for further applications. Keywords: ABO3 , SrTiO3 , sol-gel process, structure analysis. Classification numbers: , , . I. INTRODUCTION Recently the compounds with the perovskite structure, especially ABO3 (A = Sr, Ba, Pb, Ca and B = Ti, Zr), have been widely investigated because of their great application in science and life. ABO3 materials show interesting properties such as luminosity [1], ferroelectricity [2], piezoelectricity [3]. These materials were investigated in application for making capacitors, varistors, photoelectrodes, .
