论文标题
Dy2O2TE的抗铁磁结构和磁性：稀土超导体R2O2BI的同源类似物
Antiferromagnetic structure and magnetic properties of Dy2O2Te: An isostructural analog of the rare-earth superconductors R2O2Bi
论文作者
论文摘要
稀土化合物R2O2BI（R = TB，DY，ER，LU，Y）是在稀有磁性磁性长距离顺序附近新发现的超导体。在这项工作中，我们通过中子散射作为Néel温度下方的A型抗铁磁结构来确定母体化合物DY2O2TE的磁序。在t = 3.5k时，大型交错磁矩9.4（1）μb位于基底AB平面中。在磁场中，包括零场和现场冷却磁化，蝴蝶形磁性磁滞和慢速磁性弛豫之间的异常磁性特性，这与在Dy2O2TE中的场诱导的元磁过渡有关。我们的实验发现可能会刺激对这些稀土化合物中抗铁磁性和超导性之间关系的进一步研究。
The rare-earth compounds R2O2Bi (R=Tb, Dy, Er, Lu, Y) are newly discovered superconductors in the vicinity of a rare-earth magnetic long-range order. In this work, we determine the magnetic order of the parent compound Dy2O2Te by neutron scattering as the A-type antiferromagnetic structure below the Néel temperature TN=9.7K. The large staggered magnetic moment 9.4(1) μB per Dy at T=3.5K lies in the basal ab plane. In a magnetic field, anomalous magnetic properties including the bifurcation between zero-field- and field-cooling magnetization, a butterfly-shaped magnetic hysteresis, and slow magnetic relaxation emerge, which are related to the field-induced metamagnetic transitions in Dy2O2Te. Our experimental findings could stimulate further research on the relation between antiferromagnetism and superconductivity in these rare-earth compounds.
