Glass, Volume 1 |
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Page 42
Nath and Douglas ( 1965 ) investigated the Cr3 + / Cr6 + equilibrium in binary
alkali silicate glasses . The Cr6 + / Cr3 + ratio was observed to increase with
alkali content and in the order Li , Na , and K for a given molar alkali content . The
0 .
Nath and Douglas ( 1965 ) investigated the Cr3 + / Cr6 + equilibrium in binary
alkali silicate glasses . The Cr6 + / Cr3 + ratio was observed to increase with
alkali content and in the order Li , Na , and K for a given molar alkali content . The
0 .
Page 51
The experimental data on nickel - doped oxide glasses indicate that Ni2 + is both
4 - and 6 - coordinated in silicate glasses while exhibiting largely octahedral
symmetry in both borate and phosphate glasses . In silicate glasses , Weyl and ...
The experimental data on nickel - doped oxide glasses indicate that Ni2 + is both
4 - and 6 - coordinated in silicate glasses while exhibiting largely octahedral
symmetry in both borate and phosphate glasses . In silicate glasses , Weyl and ...
Page 239
A second hole center , called HC2 , also occurs in alkali silicate glasses and is
dominant in glasses with high alkali content . The ESR response of this center is
shown in Fig . 10 for potassium and sodium silicate glasses . Schreurs ( 1967 )
has ...
A second hole center , called HC2 , also occurs in alkali silicate glasses and is
dominant in glasses with high alkali content . The ESR response of this center is
shown in Fig . 10 for potassium and sodium silicate glasses . Schreurs ( 1967 )
has ...
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absorption alkali annealing applied assumed atoms band birefringence bleaching bond borate glasses Bray Brillouin calculations caused Ceram charge Chem coefficient color composition concentration conductivity considered constant containing coordination copper crystal crystalline curve darkening density dependence described detailed determined dielectric diffusion discussed distribution effect electron energy equation equilibrium et al experimental fading field fluctuations frequency function given gives heat treatment hole increased indicated intensity ions levels light liquid material measured mole negative observed obtained optical oxide oxygen particles phase photochromic Phys polarization positive present probably produce properties range ratio reduced relaxation reported respectively sample scattering separation shift shown in Fig silicate glasses silver halide similar SiO2 sodium Solids spectra spectrum strain stretching structural studied Taylor techniques temperature term thermal tion transition trapped units unpublished wavelengths York