Synthesis, Structure, and Magnetic Properties of Sr2NiOsO6 and Ca2NiOsO6: Two New Osmium-Containing Double Perovskites

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• 作者：Ren&eacute ; Macquart ; Seung-Joo Kim ; William R. Gemmill ; Judith K. Stalick ; Yongjae Lee ; Tom Vogt ; and Hans-Conrad zur Loye
• 刊名：Inorganic Chemistry
• 出版年：2005
• 出版时间：December 26, 2005
• 年：2005
• 卷：44
• 期：26
• 页码：9676 - 9683
• 全文大小：316K
• 年卷期：v.44,no.26(December 26, 2005)
• ISSN：1520-510X

文摘

Two new double perovskite oxides, Ca₂NiOsO₆ and Sr₂NiOsO₆, have been prepared as polycrystalline powders bysolid state synthesis. The two oxides were structurally characterized by variable-temperature powder neutron diffraction.Ca₂NiOsO₆ was found to adopt a monoclinic structure (P2₁/n), while Sr₂NiOsO₆ was found to be tetragonal (I4/m).Magnetic susceptibility measurements indicate that Ca₂NiOsO₆ orders in a canted antiferromagnetic state at about175 K while Sr₂NiOsO₆ orders antiferromagnetically at about 50 K.