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2005
Osmium
I 8100
25- 027
Crystal Growth and Magnetic Properties of Lanthanide-Containing Osmium
Double Perovskites, Ln2NaOsO6 (Ln: La, Pr, Nd). — Single crystals of the title
compounds are grown from Os powder and Ln2O3 (Ln: La, Pr, Nd) in a NaOH flux in
the presence of water (Ag tube, 600 °C, 24 h). The three Ln2NaOsO6 compounds crystallize in the monoclinic space group P21/n with Z = 2 and form a 1:1 ordered rock salt
lattice of the Na+ and Os5+ cations. Magnetic susceptibility measurements show evidence of antiferromagnetic correlations in La2NaOsO 6 and of a spin-flop transition
from an antiferromagnetic to ferromagnetic-like state in both Pr2NaOsO6 and
Nd2NaOsO 6. — (GEMMILL, W. R.; SMITH, M. D.; PROZOROV, R.; ZUR LOYE*,
H.-C.; Inorg. Chem. 44 (2005) 8, 2639-2646; Dep. Chem. Biochem., Univ. S. C.,
Columbia, SC 29208, USA; Eng.) — Schramke
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