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The Electrostatic Contribution to the Lattice Energy of Some Ordered Spinels

1950; American Institute of Physics; Volume: 18; Issue: 8 Linguagem: Inglês

10.1063/1.1747852

1520-9032

Frank de Boer, J. H. van Santen, E. J. W. Verwey,

Pigment Synthesis and Properties

The electrostatic contribution to the lattice energy of some ordered spinels is calculated. It is made plausible that also in the case of certain spinels that do not show any long-range ordering, a considerable amount of short-range order is to be expected. As a consequence the lattice energy of ``inversed'' spinels containing different ions at octahedral positions, is increased with respect to the corresponding ``normal'' spinels containing one type of ions at octahedral interstices.