Synthesis of a new magnetic Y2Mn2/3Re4/3O7 with pyrochlore-like structure |
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| Authors: | G V Bazuev T I Chupakhina V N Krasil’nikov |
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| Institution: | (1) Institute of Solid-State Chemistry, Ural Division, Russian Academy of Sciences, ul. Pervomaiskaya 91, Yekaterinburg, 620219, Russia |
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| Abstract: | A complex oxide of the Y2Mn2/3Re4/3O7 composition with pyrochlore-like structure and parameters of hexagonal unit cell a=14.91(1) Å c=17.53(1) Å was synthesized. The magnetic susceptibility and magnetization measurements showed that below 190 K this oxide possesses spontaneous magnetic moment. In the paramegnetic region, the magnetic susceptibility obeys the Curie-Weiss law χ=C/(T?Θ), with C=2.07 cm3 K mol?1 and Θ=?160 K, and the effective magnetic moment corresponding to the cationic combination Mn2+-Re5+. The data obtained allow one to assume that the compound has a noncollinear antiferromagnetic structure. |
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