Neutron diffraction studies of GexSe1-x glasses

Ramesh Rao, N. ; Sangunni, K. S. ; Gopal, E. S. R ; Krishna, P. S. R. ; Chakravarthy, R. ; Dasannacharya, B. A. (1995) Neutron diffraction studies of GexSe1-x glasses Physica B: Condensed Matter, 213-214 . pp. 561-563. ISSN 0921-4526

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/092145...

Related URL: http://dx.doi.org/10.1016/0921-4526(95)00211-Q

Abstract

Neutron diffraction studies were performed on GexSe1-x glasses for x= 0.1,0.2, 0.33 and 0.4. The structure factor S(Q) shows maximum intermediate-range order for x = 0.33. Analysis of the two main peaks in T(r) shows that these glasses have Ge(Se½)4 tetrahedra. Glasses with x ≤ 0.2 consist of Se-chains cross-linked with Ge-tetrahedra while for x ≥ 0.2 Ge-tetrahedra are present in both edge- and corner-shared configurations.

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