Abstract
The elastic neutron scattering in polycrystalline samples of the (Ni1−x Lix)O solid solutions (x<0.1) is investigated by neutron diffraction technique. It is shown for the first time that the doping of nickel monoxide by lithium is accompanied by the formation of vacancies in the anionic sublattice, and the vacancy concentration is equal to the lithium content in the solid solution. The neutral lithium atoms are randomly arranged over sites of the cationic sublattice with possible spatial polarization of a valence electron toward an oxygen vacancy. In the composition range studied, the diamagnetic dilution of nickel monoxide by lithium turns out to be magnetically similar to the dilution with magnesium. In both cases, the Néel temperature and the mean magnetic moment per atom linearly decrease with an increase in concentration of the diamagnetic dopant.
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Translated from Fizika Tverdogo Tela, Vol. 42, No. 2, 2000, pp. 307–312.
Original Russian Text Copyright © 2000 by Men’shikov, Dorofeev, Teplykh, Gizhevski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Mironova.
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Men’shikov, A.Z., Dorofeev, Y.A., Teplykh, A.E. et al. Neutron diffraction investigation of structural and magnetic states of lithium-doped antiferromagnet NiO. Phys. Solid State 42, 315–320 (2000). https://doi.org/10.1134/1.1131204
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DOI: https://doi.org/10.1134/1.1131204