The magnetic properties of the S = 1/2 distorted kagome antiferromagnet CdCu₃(OH)₆Cl₂ have been studied by magnetic susceptibility, heat capacity, and high-field magnetization measurements. The magnetic susceptibility and heat capacity measurements indicated the absence of a magnetic long-range order down to 0.7 K, and the magnetization exhibited spin polarization of one-third of the total spins in a relatively weak magnetic field. The observed magnetic behavior of CdCu₃(OH)₆Cl₂ was analyzed qualitatively by using a kagome model with three different exchange interactions that connects the regular kagome antiferromagnet and the isolated one-dimensional chain with inter-chain free spins. The orbital arrangement of Cu²⁺ ions induced a difference in the exchange interactions in the kagome lattice, and the interplay between the orbital and spin states gave rise to unique magnetic properties in the kagome antiferromagnet.

中文翻译：

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具有低对称轨道排列的S = 1/2扭曲的Kagome反铁磁体CdCu3（OH）6Cl2的磁性

通过磁化率，热容和高场磁化强度测量，研究了S = 1/2变形的鹿形反铁磁体CdCu ₃（OH）₆ Cl ₂的磁性。磁化率和热容测量表明，没有低至0.7 K的磁性远距离有序，并且在相对弱的磁场中，磁化强度表现出自旋极化的三分之一。CdCu ₃（OH）₆ Cl _2的磁行为通过使用具有三个不同交换相互作用的kagome模型进行定性分析，该模型将常规kagome反铁磁体和具有链间自由旋转的孤立一维链连接起来。Cu ²⁺离子的轨道排列引起了kagome晶格中交换相互作用的差异，并且轨道和自旋态之间的相互作用导致了kagome反铁磁体中独特的磁性。