Abstract

The Raman spectra of crystalline YPO₄ and YbPO₄ have been excited with a helium–neon 25-mW gas laser operating at 6328 Å. Crystallographic data indicate that PO₄ complexes exist in these two isomorphic crystals. This has been confirmed by the present Raman data. Vibrational levels that can be attributed entirely to internal PO₄³⁻ vibrations were observed. For YPO₄ they are 1056, 1023, 997, 578, 481, 330, and 292 cm⁻¹. For YbPO₄ they are 1067, 1029, 1007, 580, 481, 325, and 310 cm⁻¹.

© 1966 Optical Society of America

Angular Dependence and Depolarization Ratio of the Raman Effect

S. P. S. Porto
J. Opt. Soc. Am. 56(11) 1585-1589 (1966)

Experimental and Theoretical Hyperfine Structure of Low-Lying Levels of Terbium 4f⁸5d6s² Configuration; Quadrupole Moment of ¹⁵⁹Tb

Claire Arnoult and Simon Gerstenkorn
J. Opt. Soc. Am. 56(2) 177-181 (1966)

Spectra of ²⁰⁸Po and the Hyperfine Structure of ²⁰⁹Po*

G. W. Charles
J. Opt. Soc. Am. 56(10) 1292-1297 (1966)

Electronic Spectra of AsO and PO: New Band Systems in the Visible

S. Mrozowski and C. Santaram
J. Opt. Soc. Am. 56(9) 1174-1178 (1966)

Band Spectra of the Two Isotopic Species of Yttrium Monochloride*

Gareth M. Janney
J. Opt. Soc. Am. 56(12) 1706-1711 (1966)