TY - JOUR
T1 - Local structure around Ge in lithium germanate glasses analyzed by AXS and EXAFS techniques
AU - Arima, Hiroshi
AU - Kawamata, Toru
AU - Sugiyama, Kazumasa
PY - 2015
Y1 - 2015
N2 - The local structure around Ge in xLi2O-(1 - x)GeO2 (x = 0, 0.17, 0.20, 0.24) glasses was investigated using AXS and EXAFS measurements. The averaged coordination number of the first nearest Ge-O pair increased with increasing Li2O content up to 24 mol% and the amount of six-coordinated Ge was proportional to Li2O content. The introduction of a GeO6 unit is suggested to be one of the most fundamental structural changes accompanying the so-called germanate anomaly detected in density measurements of alkali-germanate glasses.
AB - The local structure around Ge in xLi2O-(1 - x)GeO2 (x = 0, 0.17, 0.20, 0.24) glasses was investigated using AXS and EXAFS measurements. The averaged coordination number of the first nearest Ge-O pair increased with increasing Li2O content up to 24 mol% and the amount of six-coordinated Ge was proportional to Li2O content. The introduction of a GeO6 unit is suggested to be one of the most fundamental structural changes accompanying the so-called germanate anomaly detected in density measurements of alkali-germanate glasses.
KW - Anomalous X-ray scattering
KW - EXAFS
KW - Lithium germanate glass
KW - Local structure
UR - http://www.scopus.com/inward/record.url?scp=84928901760&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84928901760&partnerID=8YFLogxK
U2 - 10.2465/jmps.141022f
DO - 10.2465/jmps.141022f
M3 - Letter
AN - SCOPUS:84928901760
SN - 1345-6296
VL - 110
SP - 60
EP - 64
JO - Journal of Mineralogical and Petrological Sciences
JF - Journal of Mineralogical and Petrological Sciences
IS - 2
ER -