Laser Induced Raman Spectra of Some Tungstates and Molybdates

R K Khanna; W S Brower; B R Guscott; E R Lippincott

doi:10.6028/jres.072A.008

Laser Induced Raman Spectra of Some Tungstates and Molybdates

J Res Natl Bur Stand A Phys Chem. 1968 Jan-Feb;72A(1):81-84. doi: 10.6028/jres.072A.008.

Authors

R K Khanna¹, W S Brower¹, B R Guscott¹, E R Lippincott¹

Affiliation

¹ Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234.

Abstract

The Raman spectra of single crystals of CaWO₄, CaMoO₄, PbWO₄, and PbMoO₄ have been recorded using a He-Ne laser (λ = 6328 Å) and an Argon ion laser (λ = 4880 Å) as the exciting radiation sources. The polarization data have enabled us to classify unambiguously the observed fundamentals into the Raman active species of the point group C_4h to which these crystals belong. The comparison of the spectra of these crystals in the low frequency region has also enabled us to make a rough classification of the bands into the rotational and the translational lattice vibrations.

Keywords: Molybdates; Raman spectra; tungstates.