Order and disorder in the local and long-range structure of the spin-glass pyrochlore, Tb2Mo2O7

To understand the origin of the spin-glass state in molybdate pyrochlores, the structure of Tb(2)Mo(2)O(7) is investigated using two techniques: the long-range lattice structure was measured using neutron powder diffraction, and local structure information was obtained from the extended x-ray absorption fine structure technique. While the long-range structure appears generally well ordered, enhanced mean-squared site displacements on the O(1) …