Abstract
Physicochemical analysis is used to study phase equilibria and to design a concentration diagram for the Zn-Co-O system. ZnO-, CoO-, and Co3O4-based mixed crystals with a fixed Zn/Co ratio have different oxygen nonstoichiometry depending on the synthesis and annealing parameters. Metastable clustering is discovered in Zn1 − x CoxO1 + δ wurtzite solid solutions, which exist stably in the range 0 ≤ x ≤ 0.2. Magnetization investigation shows that an antiferromagnetic order exists in homogeneous Zn1 − x CoxO1 + δ grains; this order is conserved up to 625 ± 25 K. The substitution of praseodymium, neodymium, samarium, or europium for zinc(II) cations in Zn0.9Co0.1O1 + δ does not spoil the compensated antiferromagnetism of the wurtzite unit cell.
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Original Russian Text © G.D. Nipan, V.A. Ketsko, T.N. Kol’tsova, A.I. Stognii, K.I. Yanushkevich, V.V. Pan’kov, A.M. Khoviv, A.M. Solodukha, 2006, published in Zhurnal Neorganicheskoi Khimii, 2006, Vol. 51, No. 12, pp. 2083–2089.
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Nipan, G.D., Ketsko, V.A., Kol’tsova, T.N. et al. Solid solutions in the Zn-Co-O system: Physicochemical properties. Russ. J. Inorg. Chem. 51, 1961–1967 (2006). https://doi.org/10.1134/S0036023606120199
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DOI: https://doi.org/10.1134/S0036023606120199