Scheelite Raman

Most divalent cation molybdates and tungstates crystallize in the scheelite lattice with the space group C n, Z=A. These compounds have been studied using the usual IR and Raman techniques 94—96). Single crystal studies 96—98) and samples with pure isotopes of Mo and Ca 99—101) have been reported. Additionally, recent information shows that vt hes above v% 84). It should be pointed out here that one cannot speak about purely internal vibrations since couphng with lattice vibrations is not neghgible, as seen in Ref. 101). 

A single crystal Raman spectrum of NaRe04 recorded at low temperatures has recently been published by Johnson et al. (200). The measured phonons of this scheelite structure and their assSinment are listed in Table 35. 

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