Glass, Volume 1Minoru Tomozawa, Robert H. Doremus |
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Results 1-3 of 41
Page 17
... addition of MgO , CaO , SrO , and BaO as shown in Fig . 6. B2O3 addition was observed to shift the edge to shorter wavelengths , apparently because of the reduction of the NBO concentration in the glasses by the formation of four ...
... addition of MgO , CaO , SrO , and BaO as shown in Fig . 6. B2O3 addition was observed to shift the edge to shorter wavelengths , apparently because of the reduction of the NBO concentration in the glasses by the formation of four ...
Page 74
... addition of up to 20 mole % Al2O3 leads to a decrease of absorption in the 900-1100 - cm - 1 region and an increase in the intensity of the 808 - cm1 Raman line , indicating that BO units disappear and boroxol groups reform upon the ...
... addition of up to 20 mole % Al2O3 leads to a decrease of absorption in the 900-1100 - cm - 1 region and an increase in the intensity of the 808 - cm1 Raman line , indicating that BO units disappear and boroxol groups reform upon the ...
Page 75
... addition of alkali oxide to GeO2 produces an immediate structural reorientation in the glass , the coordination of the Ge going from 4 to 6 . This is accomplished by the incorporation of two high - energy Ge d orbitals into the Ge - O ...
... addition of alkali oxide to GeO2 produces an immediate structural reorientation in the glass , the coordination of the Ge going from 4 to 6 . This is accomplished by the incorporation of two high - energy Ge d orbitals into the Ge - O ...
Contents
Text | 8 |
Ultraviolet Absorption | 10 |
Visible Absorption | 35 |
Copyright | |
49 other sections not shown
Common terms and phrases
absorption alkali anisotropic annealing applications assumed atoms band birefringence bleaching bond Bray Brillouin calculations caused Ceram charge Chem coefficient color composition concentration considered constant containing coordination copper crystal crystalline curve darkening density dependence described detailed determined dielectric diffusion discussed distribution effect electron energy equilibrium et al experimental fading field Figure fluctuations frequency function given gives heat heat treatment hole increase indicated intensity ions levels light liquid material measured microstructural mole negative birefringence observed obtained optical oxide oxygen particles phase photochromic Phys polarization positive present produce range ratio reduced relaxation reported respectively sample scattering separation shift shown in Fig shows silicate glasses silver halide similar SiO2 sodium Solids spectra spectrum strain stress stretching structural studied Taylor techniques temperature term thermal tion transition trapped viscosity wavelengths York