LOCAL AND INTERMEDIATE-RANGE ORDER IN CESIUM GERMANATE GLASS

Complementary neutron diffraction and anomalous X-ray diffraction tech niques are used to probe the nature and origin of local and intermedia te-range order in cesium germanate glass. Both neutron and differentia l X-ray structure factors reveal peaks at low wave vector associated w ith intermediate-range order. The real-space correlation functions sho w that the local interatomic correlations in the glass are similar to those in the reference crystal Rb2Ge4O9 and imply a homogeneous distri bution of Cs+ cations.