Glass, Volume 1Minoru Tomozawa, Robert H. Doremus |
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Page 312
... oxygen ion to a site around an adjacent ( or second ) oxygen ion which now has two alkali ions around it . This is regarded as a " defect " . One of the two alkali ions around the second nonbridging oxygen ion can move on to the site ...
... oxygen ion to a site around an adjacent ( or second ) oxygen ion which now has two alkali ions around it . This is regarded as a " defect " . One of the two alkali ions around the second nonbridging oxygen ion can move on to the site ...
Page 314
... oxygen and bridging oxygen around alkali ions . W is the energy required to form a defect . In the group of alkali jump , it is assumed that an alkali ion moves from a site which is surrounded by x bridging oxygen atoms to a site which ...
... oxygen and bridging oxygen around alkali ions . W is the energy required to form a defect . In the group of alkali jump , it is assumed that an alkali ion moves from a site which is surrounded by x bridging oxygen atoms to a site which ...
Page 335
... oxygen ( O ) site may not be perfectly spherically symmetric , but , on an average of numerous oxygen ( O ) sites , alkali distribution can be considered spherically symmetric . ] This is schematically shown in Fig . 30 , using Na * as ...
... oxygen ( O ) site may not be perfectly spherically symmetric , but , on an average of numerous oxygen ( O ) sites , alkali distribution can be considered spherically symmetric . ] This is schematically shown in Fig . 30 , using Na * as ...
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