Silicates and Germanates

Fluorescent and Physical Properties of Neodymium-Doped Alkali Silicate and Germanate Glasses... 

Table 6.8. O NMR parameters for metal silicate and germanate glasses.

A number of silicate and germanate fluoroamphiboles of the richterite series, Na2Mg2[(Si ,Ge8 B)022]F2 (n = 8, 7.7, 4, or 0), in which the anions form a ribbon structure, have been synthesized and their properties studied as a function of Si—Ge content 312 it is concluded from the data that a broad chemical crystallographic analogy exists between the silicates and ger-manates. 

NAV] Navrotsky, A., Thermodynamics of formation of the silicates and germanates of some divalent transition metals and of magnesium, J. Inorg. Nucl. Chem., 33, (1971), 4035-4050. Cited on pages 238, 241,245, 348. 

NAV2] Navrotsky, A., Thermodynamic relations among olivine, spinel, and phenacite structures in silicates and germanates I. Volume relations and the systems NiO-MgO-Ge02 and Co0-Mg0-Ge02, J. Solid State Chem., 6, (1973), 21-41. Cited on pages 238, 361. 

Cockbain AG, Smith GV (1967) Alkaline-earth - rare-earth silicate and germanate apatites. Mineral Mag 36 411-421... 

Table 1. Oscillator strengths of europium (III) in phosphate, silicate and germanate glasses and in aqueous solution...

An alternative explanation of this phenomenon is the increase in the covalency of the Eu—0 in the glasses in the order of phosphate, silicate and germanate. The increase of covalency (or interconfigurational mixing) can also be detected from the ratio of the Dq (electric... 

Higuchi Y, Sugawata M, Onishi K, Sakamoto M, Nakayama S (2010) Oxide ionic conductivities of apatite-type lanthanum silicates and germanates and their possibilities as an electrolyte of lower temperature operating SOFC. Ceramics Int 36 955-959... 

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