Neutron Powder Diffraction Study of Molybdenum and Tungsten Dioxides

Abstract

Neutron powder diffraction data for MoO2 [P21/c, a 5.6102(3), b 4.8573(2), c 5.6265(3) ?, ß 120.915(2)°] and WO2 [P21/c, a 5.5769(2), b 4.8986(1), c 5.6644(2) ?, ß 120.678(1)] have been employed to refine structural parameters by the Rietveld method. The results confirm previous studies but have considerably greater precision.