ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 34, Number 5
JKCSEZ 34(5)
October 20, 1990 

The structural variation process of amorphous SiO2 gel upon heat-treatment conditions of 80, 250, 450 and 1000℃ has been studied by using the radial distribution functions (RDFobs) estimated from the X-ray diffraction intensities. The expected gel structure was determined by comparing the RDFobs with those for the other six standard samples selected appropriately. The structure of specimens prepared by sol-gel method is well consistent with that of fused SiO2 (β-cristobalite with cubic symmetry) except a slight difference in O-O band distance.