Abstract

The effects of high external pressures on the micro-Raman spectra of potassium chromate, K₂CrO₄, and potassium tungstate, K₂WO₄, have been investigated for pressures approaching 45 kbar. There is no evidence for a pressure-induced phase transition in the chromate, but there is clearly such a transition at ~13 kbar in the tungstate. The pressure sensitivities of the principal bands observed in the spectra of the two salts have been determined. The values obtained are comparable to those reported for simple spinels and somewhat larger than those for scheelites.

Temperature-dependent absorption and emission of potassium double tungstates with high ytterbium content

Yean-Sheng Yong, Shanmugam Aravazhi, Sergio A. Vázquez-Córdova, Joan J. Carjaval, Francesc Díaz, Jennifer L. Herek, Sonia M. García-Blanco, and Markus Pollnau
Opt. Express 24(23) 26825-26837 (2016)

High index contrast passive potassium double tungstate waveguides

Mustafa Akin Sefunc, Frans B. Segerink, and Sonia M. García-Blanco
Opt. Mater. Express 8(3) 629-638 (2018)

An Alkaline Solution of Potassium Chromate as a Transmittancy Standard in the Ultraviolet*

Geraldine Walker Haupt
J. Opt. Soc. Am. 42(7) 441-447 (1952)

Laser Raman Spectra of Liquid and Solid Bromine and Carbon Disulfide Under High Pressure

A. J. Melveger, J. W. Brasch, and E. R. Lippincott
Appl. Opt. 9(1) 11-15 (1970)

High Pressure Optics

A. Van Valkenburg
Appl. Opt. 9(1) 1-4 (1970)