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首页> 外文期刊>Bulletin of the American Physical Society >APS -2017 Annual Meeting of the APS Mid-Atlantic Section- Event - Synthesis and structural characterization of geometrically frustrated double perovskites
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APS -2017 Annual Meeting of the APS Mid-Atlantic Section- Event - Synthesis and structural characterization of geometrically frustrated double perovskites

机译：APS -2017 APS大西洋中部年会-活动-几何受挫的双钙钛矿的合成与结构表征

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In geometrically frustrated materials, magnetic order is inhibited by the arrangement of magnetic ions. Typically seen with triangular or tetrahedrally coordinated moments favoring antiparallel (antiferromagnetic) alignment, frustrated materials exhibit a variety of magnetic ground states due to the cancellation of normally dominant interactions, providing a window into exotic physics.Double perovskites of composition A$_{mathrm{2}}$BB$prime $O$_{mathrm{6}}$, with 'rock-salt' order of magnetic B' ions, potentially exhibit frustration. Further, the chemical versatility of perovskites enables synthesis of compounds with divergent properties, with great potential to yield new insights into frustration physics.We report the solid-state synthesis and x-ray structural characterization of Ba$_{mathrm{2}}$YbMoO$_{mathrm{6}}$, Ba$_{mathrm{2}}$YWO$_{mathrm{6}}$, Ba$_{mathrm{2}}$LuWO$_{mathrm{6}}$, Ba$_{mathrm{2}}$ScMoO$_{mathrm{6,hinspace }}$and Sr$_{mathrm{2}}$ScMoO$_{mathrm{6}}$. All but the latter crystallize in the ideal cubic extit{Fm-3m} double perovskite structure, while Sr$_{mathrm{2}}$ScMoO$_{mathrm{6}}$ was refined in the tetragonal extit{I4/m} space group, consistent with their respective Goldschmidt tolerance factors.
机译：在几何受阻的材料中，磁性离子的排列会抑制磁性顺序。挫折的材料通常具有三角形或四面体协调的力矩，有利于反平行（反铁磁）排列，由于通常的主导相互作用被抵消，它们表现出各种磁性基态，从而提供了进入奇异物理学的窗口.A $ _ {mathrm { 2}} $ BB $ prime $ O $ _ {mathrm {6}} $，具有磁性B'离子的“岩盐”阶，可能会产生挫败感。此外，钙钛矿的化学多功能性使合成具有发散性质的化合物成为可能，这具有极大的潜力，可为挫折物理学提供新的见解。我们报道了Ba $ _ {mathrm {2}} $的固态合成和x射线结构表征YbMoO $ _ {mathrm {6}} $，Ba $ _ {mathrm {2}} $$ YWO $ _ {mathrm {6}} $，Ba $ _ {mathrm {2}} $ LuWO $ _ {mathrm {6} } $，Ba $ _ {mathrm {2}} $ ScMoO $ _ {mathrm {6，hinspace}} $$和Sr $ _ {mathrm {2}} $ ScMoO $ _ {mathrm {6}} $。除后者外，所有晶体均以理想的立方出口{Fm-3m}钙钛矿结构结晶，而Sr $ _ {mathrm {2}} $ ScMoO $ _ {mathrm {6}} $在四角形出口{I4 / m }空间组，与其各自的Goldschmidt容差因子一致。

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