Optical: A=2.199, B=2.217, Q=2.260, Sign=+, 2V=67 degrees Colour: Colorless Sourc...
paramagnetic resonance of colour centresphotoluminescenceradiation effects/ luminescencePbCl 2PbBr 2 single crystalsred luminescenceyellow emissionPbCl 2 and PbBr 2 single crystals show a red luminescence under uv excitation at temperatures below 200°K. Furthermore, PbCl 2 shows a yellow emission at ...
Experimental/ colour centres lead compounds luminescence of inorganic solids paramagnetic resonance radiation effects/ UV irradiation EPR luminescence PbCl 2 PbBr 2 single crystals low temperatures/ A6170D Colour centres A7630 Electron paramagnetic resonance and relaxation (condensed matter) A7855 Photolumines...
Experimental/ colour centreslead compoundsluminescence of inorganic solidsparamagnetic resonanceradiation effects/ UV irradiationEPRluminescencePbCl 2PbBr 2single crystalsResults are presented of EPR-measurements on PbCl 2 and PbBr 2 single crystals at low temperatures. Pb +, Pb +-pairs and colloidal ...
Pb(18-crown-6)Cl2 and Hg(18-crown-6)I2 are obtained as transparent colourless crystals of needle and hexagonal shape, respectively, by isothermal evaporation of their dichloromethane solutions. Pb(18-crown-6)Cl2 crystallizes with the trigonal crystal system [, no. 148, a = b = 1176.3(2)...
The colour of the prepared chloro-antimonite glasses varies between yellow and brown. The glass transition temperature ( T g ) decreases with increasing AgCl concentrations. DC and AC electrical conductivities and complex electrical modulus were measured across a temperature range from room temperature ...