Effect of gamma irradiation on hydrothermally synthesized barium titanate nanoparticles. Issue 3 (3rd April 2017)

• Record Type: Journal Article
• Authors: Shameer Ahmed, B.; Namratha, K.; Nandaprakash, M. B.; Somashekar, R.; Byrappa, K.
• Is Part Of: Radiation effects and defects in solids. Volume 172:Issue 3/4(2017)
• Page Start: 257
• Page End: 270
• Publication Date: 2017-04-03
• Subjects: Microstructural parameters -- barium titanate nanoparticles -- ferroelectric -- refractive index -- force constant -- gamma irradiation; Radiation chemistry -- Periodicals; Crystals -- Defects -- Periodicals; Crystal lattices -- Periodicals; 530.416
• DOI: 10.1080/10420150.2017.1303835
• Languages: English
• ISSNs: 1042-0150

Abstract

ABSTRACT: The effect of gamma irradiation on hydrothermally synthesized BaTiO3 nanoparticles has been investigated. Gamma irradiation was carried out at room temperature from 0, 50, 100, 150, 200 kGy to a maximum dose up to 250 kGy, source being 60 Co gamma radiations. The structure, size and chemical changes of the BaTiO3 were studied using X-ray diffraction, Fourier-transform infrared spectrophotometry (FTIR) techniques and scanning electron microscopy (SEM). The optical band gap has been computed by UV–Visible spectroscopy data. From the results obtained, it is evident that the gamma irradiation increases the crystallinity, whereas the particle size of BaTiO3 nanoparticles is altered. UV–Visible spectroscopy shows a noticeable change in the energy band gap due to gamma irradiation. Significant changes in anharmonicity constant computed using FTIR data due to irradiation has been observed. SEM shows the size and deviation from uniformity of particles.