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首页> 外文期刊>Journal of Crystal Growth >Crystal growth and characterization of the new spin dimer system Ba_3Cr_2O_8
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Crystal growth and characterization of the new spin dimer system Ba_3Cr_2O_8

机译:新型自旋二聚体系统Ba_3Cr_2O_8的晶体生长和表征

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摘要

Crystals of the spin dimer system Ba_3Cr_2O_8 have been grown for the first time by the traveling solvent floating zone method. Obtained crystals were characterized by X-ray diffraction (XRD) at room temperature and refined in the space group R3m. The magnetic susceptibility shows a broad maximum around 16 K and below this drops off sharply, providing evidence for the spin gap which was estimated to be 15.6(3)K. From the susceptibility and single crystal XRD measurements, it has been confirmed that the Cr ions are found in the rare +5 oxidation state in this material.
机译:自旋二聚体体系Ba_3Cr_2O_8的晶体通过移动溶剂浮区法首次生长。在室温下通过X射线衍射(XRD)表征获得的晶体,并在空间群R3m中对其进行精制。磁化率在16 K附近显示出一个极大的最大值,在此之下,磁化率急剧下降,为自旋间隙提供了证据,据估计其为15.6(3)K。从磁化率和单晶XRD测量,已经证实在该材料中发现Cr离子处于稀有的+5氧化态。

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