Present work aims to investigate the effect of Y3+ - substitution and 50 MeV, Li3+ ion irradiation (fluence: 5 x 1013 ions/cm2) on infrared spectral evolution of Y3+xFe5-xO12 (x = 0.0, 0.2 0.4, 0.6, 0.8 and 1.0) garnet system. Infrared absorption spectra for x = 0.0 – 0.6 compositions show three absorption bands while x = 0.8 – 1.0 compositions are characterized by two absorption bands, identical with IR spectra of rare earth ortho ferrites. The position and intensity of bands are found to be influenced by Y3+ - substitution. The intensity of absorption bands for x = 0.0 – 0.4 compositions is found to increase, while for x = 0.6 – 1.0 compositions no effect of swift heavy ion irradiation has been observed. The results have been explain in the light of SHII induced defect states, partial removal of un-wanted YFeO3 phase and change in structural parameters. It seems that YFeO3 phase is irradiation hard phase.
International Letters of Chemistry, Physics and Astronomy (Volume 44)
K. B. Modi et al., "Pre and Post Effect of Swift Heavy Ion Irradiation on Infrared Spectral Evolution of Y3+xFe5-xO12 (x = 0.0 - 1.0) System", International Letters of Chemistry, Physics and Astronomy, Vol. 44, pp. 66-72, 2015