Infrared and Dielectrical Properties of SrTiO3:Nd
Far-infrared reflection spectra and results of dielectric measurements of SrTiO3 single crystal doped by neodymium are presented in the paper. Dielectric investigations were conducted at temperature range from 25 K to room temperature for the test frequency 1MHz. The numerical analysis of the far-infrared reflection spectra made using a fitting procedure based on factorized form of the dielectric function. The results for SrTiO3: Nd are compared with those for pure crystal. The lowest-frequency phonon mode is found to be strongly influenced by presence of neodymium ions in SrTiO3 single crystal.
Dragan P. Uskokovic, Slobodan K. Milonjic and Dejan I. Rakovic
S. Spasović, N. Paunović, D. Popović, J. Dojčilović, "Infrared and Dielectrical Properties of SrTiO3:Nd", Materials Science Forum, Vol. 518, pp. 471-476, 2006