ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
An increase of the Ge–O coordination numbers (NGeO) from 4 to 5 with decreasing GeO2content is obtained by diffraction on K2O-GeO2-P2O5 glasses of GeO2 fractions ≥ 50 mole%. Firstsharp diffraction peaks (FSDP) appear at small scattering vectors Q of 7.5 nm-1. A structural modelis already reported which explains this behaviour for that sample (25K2O-50GeO2-25P2O5) with theFSDP reaching maximum intensity and NGeO = ~5. Here, this model gets support by considering thedetailed fractions of the structural groups which exist at the corresponding glass stoichiometry.Structures similar to this model are not known of the crystalline germanophosphate compounds
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.39-40.69.pdf
Permalink