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2005
Magnetic properties
D 9000
Synthesis, Structural and Magnetic Characterization of a New Scheelite Related
Compound: Eu2Mo3O12. — The title compound is synthesized by reaction of a
20- 013 stoichiometric
mixture of Eu2O3 and MoO2 in air (900 °C, 4 d) and characterized by
powder X-ray and electron diffraction, high resolution electron microscopy and magnetic measurements. Eu2Mo 3O12 crystallizes in the monoclinic space group C2/c and
has a complex scheelite superstructure whose essential feature is the existence of isolated Mo tetrahedra. Each Mo atom has four oxygen neighbors at distances of
1.75—1.91 Å, whereas each Eu atom has eight oxygen neighbors at 2.43 Å. The temperature dependence of the inverse magnetic susceptibility shows that Eu2Mo3O12 behaves as a Curie-Weiss paramagnet at high temperature (160—300 K), whereas it
shows Van Vleck paramagnetism in the range 100—20 K. — (BOULAHYA, K.;
PARRAS, M.; GONZALEZ-CALBET*, J. M.; Eur. J. Inorg. Chem. 2005, 5, 967-970;
Dep. Quim. Inorg., Fac. Cienc. Quim., Univ. Complutense, E-28040 Madrid, Spain;
Eng.) — Schramke
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