Citation: Henderson, C. M. B.; Redfern, S. A. T.; Smith, R. I.; Knight, K. S.; Charnock, J. M. (2001). Composition and temperature dependence of cation ordering in Ni-Mg olivine solid solutions: A time-of-flight neutron powder diffraction and EXAFS study Sample: Mg80Ni20 at T = 650 C. American Mineralogist, 86, pp. 1170-1187.