An osmium chloride with the chemical formula of OsxCl3 (x = 0.81) was synthesized and its crystal structure and thermodynamic properties were investigated. OsxCl3 crystallizes in a layered CdCl2-type structure with the triangular lattice partially occupied by Os ions on average. However, on microscopic length scales, the triangular lattice is composed of nano-domains with a honeycomb arrangement of Os ions, as observed by electron microscopy and Raman scattering experiments. Magnetization and heat capacity measurements revealed an absence of magnetic long-range order down to 0.08 K, while a broad peak in heat capacity at 0.15 K may indicate a short-range order in the local honeycomb lattice. OsxCl3 may exhibit certain aspects of the Kitaev spin liquid that are expected for a perfect honeycomb lattice of osmium trichloride.

中文翻译：

---

Kitaev 自旋液体候选 OsxCl3 由蜂窝状纳米结构域组成

合成了化学式为OsxCl3 (x = 0.81) 的氯化锇，并研究了其晶体结构和热力学性质。OsxCl3 以层状 CdCl2 型结构结晶，三角形晶格平均部分被 Os 离子占据。然而，在微观长度尺度上，三角形晶格由具有 Os 离子蜂窝状排列的纳米域组成，如通过电子显微镜和拉曼散射实验所观察到的。磁化和热容测量表明，在低至 0.08 K 时不存在磁性长程有序，而 0.15 K 处的热容宽峰可能表明局部蜂窝晶格中存在短程有序。OsxCl3 可能表现出 Kitaev 自旋液体的某些方面，这些方面是三氯化锇完美蜂窝状晶格所预期的。