Glass, Volume 1Minoru Tomozawa, Robert H. Doremus |
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Page 29
... boron coordination in a study of the x - ray diffraction of a series of alkali borate glasses . Silver and Bray ( 1958 ) and Bray and O'Keefe ( 1963 ) employed NMR to establish that the conversion of 3- to 4 - coordinated borons peaks ...
... boron coordination in a study of the x - ray diffraction of a series of alkali borate glasses . Silver and Bray ( 1958 ) and Bray and O'Keefe ( 1963 ) employed NMR to establish that the conversion of 3- to 4 - coordinated borons peaks ...
Page 73
... borate glasses is shown in Fig . 47 ( Simon , 1960 ) . Just as in the case of the silicate glasses , the fundamental B - O - B stretching band near 1265 cm ̄1 is observed to decrease with alkali content of the glass , indicating some ...
... borate glasses is shown in Fig . 47 ( Simon , 1960 ) . Just as in the case of the silicate glasses , the fundamental B - O - B stretching band near 1265 cm ̄1 is observed to decrease with alkali content of the glass , indicating some ...
Page 246
... borate glasses are similar in every respect , including the bond angle distortions , to those observed on silicon atoms in silicate glasses . The intensity of the boron E ' ESR response in borate glasses is generally insufficient to ...
... borate glasses are similar in every respect , including the bond angle distortions , to those observed on silicon atoms in silicate glasses . The intensity of the boron E ' ESR response in borate glasses is generally insufficient to ...
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