Raman spectroscopy has been applied to investigations of the effects of substitutionally replacing Lu by Tb in single crystals of the tetragonal, zircon structure host LuPO4. Room-temperature, polarized Raman spectra of Lu1−xTbxPO4 (x=0, 0.01, 0.1, and 0.12) have been studied. No appreciable changes in the frequencies of the phonons were observed, indicating that the force fields in the LuPO4 lattice are not strongly altered by Tb doping on the Lu site. A discussion of the fluorescence bands and a revised assignment of the LuPO4 vibrations are presented.
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Moura et al. (2004) studied this question.
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