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Optical absorption of divalent metal tungstates: Correlation between the band-gap energy and the cation ionic radius
R. Lacomba-Perales, J. Ruiz-Fuertes, D. Errandonea +2
We have carried out optical-absorption and reflectance measurements at room temperature in single crystals of AWO4 tungstates (A = Ba, Ca, Cd, Cu, Pb, Sr, and Zn). From the experim…
High-pressure effects on the optical-absorption edge of CdIn2S4, MgIn2S4, and MnIn2S4 thiospinels
J. Ruiz-Fuertes, D. Errandonea, F. J. Manjon +4
The effect of pressure on the optical-absorption edge of CdIn2S4, MgIn2S4, and MnIn2S4 thiospinels at room temperature is investigated up to 20 GPa. The pressure dependence of thei…
Effects of high pressure on the optical absorption spectrum of scintillating PbWO4 crystals
D. Errandonea, D. Martinez-Garcia, R. Lacomba-Perales +2
The pressure behavior of the absorption edge of PbWO4 was studied up to 15.3 GPa. It red-shifts at -71 meV/GPa below 6.1 GPa, but at 6.3 GPa the band-gap collapses from 3.5 eV to 2…