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  • 1
    Electronic Resource
    Electronic Resource
    MOLTEN SALT SYSTEM GALLIUM MONOIODIDE—GALLIUM TRIIODIDE. II. VAPOR PRESSURES AND SPECIES1 (1963)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 67 (1963), S. 509-511 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100796a511
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  • 2
    Electronic Resource
    Electronic Resource
    MOLTEN SALT SYSTEM GALLIUM MONOIODIDE—GALLIUM TRIIODIDE. I. DENSITIES AND ELECTRICAL CONDUCTANCES1 (1963)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 67 (1963), S. 307-310 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100796a022
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  • 3
    Electronic Resource
    Electronic Resource
    Structure Changes in the Molten Oxide System: Lead Oxide-Germanium Dioxide (1964)
    s.l. : American Chemical Society
    Inorganic chemistry 3 (1964), S. 958-962 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50017a007
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  • 4
    Electronic Resource
    Electronic Resource
    Mixed-cation effect in copper(I) germanate glasses (1975)
    s.l. : American Chemical Society
    Inorganic chemistry 14 (1975), S. 159-163 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50143a035
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  • 5
    Electronic Resource
    Electronic Resource
    BeO·Al2O3·SiO2 system: Structural relationships of crystalline, glassy, and molten beryl (1967)
    Springer
    Journal of materials science 2 (1967), S. 33-39 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Physical property measurements are reported for beryl glass and for three 60 mole % SiO2 melts (including beryl) at temperatures above 1600° C. Electron micrographic evidence shows that beryl glass has undergone a two-liquid phase separation. Density measurements of this glass and its melt can be interpreted in terms of the dissociation of Si6O18 −12 rings as beryl melts incongruently. The presence of discrete BeO4 tetrahedra and AlO6 octahedra in molten beryl is suggested by the electrical conductance and viscosity data for these melts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00550050
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  • 6
    Electronic Resource
    Electronic Resource
    Composites of bubble encapsulated silver or gold spheres in oxide glasses (1971)
    Springer
    Journal of materials science 6 (1971), S. 1204-1208 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Bubble-encapsulated silver or gold spheres ranging in size from less than 1 to about 500 μm in diameter can be prepared in quenched oxide glasses. High metal concentrations (〉 1% Ag2O, Au2O3, etc. equivalent), imperfect batch mixing and melting procedures, and melt viscosities between 10 and 5000 poise, all favour metal sphere formation over either complete agglomeration or colloidal dispersion. The release of the latent heat of fusion when the metal freezes can, apparently, expand either small amounts of residual gases or the small void created by metal solidification to form a bubble. Rapid quenching appears to freeze the bubble. In contrast, subsequent slow cooling below the melting point of the metal may allow each bubble to collapse around its sphere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00550092
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  • 7
    Electronic Resource
    Electronic Resource
    Infra-red study of polymerisation in silver, thallium, and thallium aluminogermanate glasses (1972)
    Springer
    Journal of materials science 7 (1972), S. 40-46 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The infra-red spectra of silver germanate, thallium germanate, and thallium aluminogermanate glasses are presented for the 1100 cm−1 to 400 cm−1 region. The pseudo rare gas type Tl+ and Ag+ ions produce spectral shifts in binary germanate glasses that are similar to those reported for alkali ions. Differences for Tl+ may be due to its high atomic weight and polarising power. The infra-red spectral shifts observed for thallium aluminogermanate glasses are those expected if GeO6 octahedra disappear while AlO4 tetrahedra engage in network repair. A structurally sensitive technique for displaying ternary oxide glass infra-red spectra is outlined. This technique is capable of discerning different modes of network depolymerisation and polymerisation in ternary germanate and silicate glasses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00549548
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  • 8
    Electronic Resource
    Electronic Resource
    Infra-red detection of depolymerization in Tl2O-GeO2-SiO2 glasses (1973)
    Springer
    Journal of materials science 8 (1973), S. 1145-1152 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Three series of glasses containing 15, 26, and 35 mol % Tl2O were prepared in the Tl2O-GeO2-SiO2 system and their infra-red spectra, densities, and refractive indices determined. Refraction decreases as SiO2 substitutes for GeO2 and is additive with respect to the two binary series, except for slight positive deviations with the low SiO2content 35 mol % Tl2O glasses. All glass series exhibit small negative molar volume deviations from additivity at low SiO2 contents and small positive deviations from additivity at higher SiO2 contents. The strong compositional dependence of the main infra-red stretching frequency values (1100 cm−1 for SiO2 and 875 cm−1for GeO2) are shown to be relatively sensitive indicators of changes in the polymeric makeup of these ternary oxide glasses. Loosening and/or depolymerization of either pure or damaged MO4 networks is accompanied byv Si-O and/orv Ge-O shifts to smaller frequencies. The frequency changes that accompany the progressive replacement of GeO2 by SiO2 suggest that (a) SiO4 tetrahedra initially replace GeO4 tetrahedra, (b) GeO6 octahedra subsequently transform to GeO4 tetrahedra, and (c) GeO4 tetrahedra finally take part in repair of damaged SiO4 networks. Use of a previously developed infra-red isofrequency contour technique revealed similar ternary trends for the two vibrational modes of interest. This emphasizes the ability of such contour trends to reflect the overall degree of network crosslinking present in ternary oxide glasses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00632766
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  • 9
    Electronic Resource
    Electronic Resource
    Depolymerization of GeO2 and GeO2 · Sb2O3 glasses by Bi2O3 (1974)
    Springer
    Journal of materials science 9 (1974), S. 753-760 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Glasses that contain at least 60 mol% GeO2 were prepared in the Bi2O3 · GeO2 and Bi2O3 · Sb2O3 · GeO2 systems. Their densities, refractive indices, and infra-red spectra were recorded. Negative molar volume deviations and positive refraction deviations occur for all of the binary glasses. These create deviations for the 60 to 80 mol % GeO2 ternary glasses that indicate non-ideal mixing when Sb3+ substitutes for Bi3+. Also, the main Ge-O stretching vibration shifts to as low as 695 cm−1 for the Bi2O3-rich binary and ternary glasses. All of these findings show that Bi2O3 more effectively depolymerizes GeO2 than does Sb2O3. The probable structural reasons for this behaviour are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00761795
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  • 10
    Electronic Resource
    Electronic Resource
    Alteration of amorphous Bi4Ge3O12 by Tl2O and Na2O (1975)
    Springer
    Journal of materials science 10 (1975), S. 1565-1570 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Ternary thallium and sodium bismuth germanate glasses were prepared and their densities refractive indices, and infra-red spectra obtained. The effect of univalent cations on the stability of the arrangement of decoupled GeO4 tetrahedra in amorphous Bi4Ge3O12 was compared with the effect of divalent cations. The molar volumes of glasses with the nominal mol% composition 20 M2O(MO).20 Bi2O3.60 GeO2 are directly related to the size and charge type of Mz+. However, the molar volumes of such glasses are inversely related to the ionic potential (z/r) of Mz+. The infra-red spectra of these ternary glasses exhibitv Ge−O shifts that reflect the presence of both isolated and small clusters of GeO4 tetrahedra compared to amorphous Bi4Ge3O12. This slight increase in the degree of polymerization appears to be directly related to the ionic potential of Mz+.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01031857
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