Effects of sintering temperature and holding times on the microstructure and chemical bond of strontium titanate (SrTiO3)

Abstract

Strontium Titanate (SrTiO3) is one attractive material studied. In this study, SrTiO3has been fabricated via the co-precipitation technique. The samples were sintered at 800oC and 900oC with holding times of 2 h and 4 h for each temperature. The purposes of this study were to synthesize SrTiO3material using co-precipitation technique and to observe the microstructure and chemical bonds of the SrTiO3 as the variations of the sintering temperatures and holding times. According to the X-Ray Diffraction (XRD) results, the sintering temperatures and holding times influenced the intensity values and peak broadening. The alteration in both parameters consequently changed the crystallite size and lattice strain of the SrTiO3material. Furthermore, the Fourier Transform Infrared (FTIR) results validated the SrTiO3material by existence of Sr- Ti-O chemical bonds. Also, the absorption peaks of O-H, C-H, and C=O chemical bonds in the SrTiO3declined due to the higher temperature and longer holding time demonstrating impurities declined. Therefore, according to this study, the sintering temperature of 900oC and the holding time of 4 h was the best parameter for fabricating SrTiO3powder.