Li₃((LiCr)(Te/Sb))O₆ compounds where Cr atoms along with Li and Te or Sb are part of a honeycomb and are studied using magnetic susceptibility, specific heat, x-ray photoelectron spectroscopy and neutron diffraction. The oxides stoichiometries as determined from the neutron diffraction studies are Li_4.47Cr_0.53TeO₆ and Li_3.88Cr_1.12SbO₆ with a stable oxidation state of +3 for Cr. Both the compounds crystallize in space group C2/m with intermixing of cations at the 4g sites leaving the 2a sites preferentially for Te or Sb. Again, the Li⁺ ions alone predominantly occur in the interlayer sites. Both the compounds show a broad anomaly in specific heat at 8K, which is robust against 8T. A corresponding anomaly is absent in the magnetic susceptibility but recovers from its derivative, dχ(T)/dT. We ascertain the magnetic anomaly temperatures (T _a ) of Li_4.47Cr_0.53TeO₆ and Li_3.88Cr_1.12SbO₆ as 5.9K and 6.7K respectively from specific heat. Although the physical properties indicated a low temperature anomaly, neutron diffraction data did not reveal a magnetic signal or a structural anomaly down to 1.5K. This rules out a conventional long-range ordered magnetic ground state in either compounds. Combining the results from specific heat, neutron diffraction and electron paramagnetic resonance, we put forth a scenario of depleted honeycomb lattice of Cr³⁺ with predominant short-range magnetic correlations as the magnetic ground states of the title compounds.

Li ₃ ((LiCr)(Te/Sb))O ₆化合物，其中Cr原子以及Li和Te或Sb是蜂窝的一部分，并使用磁化率、比热、X射线光电子能谱和中子衍射进行研究。由中子衍射研究确定的氧化物化学计量为 Li _4.47 Cr _0.53 TeO ₆和 Li _3.88 Cr _1.12 SbO ₆，Cr的稳定氧化态为+3。两种化合物都在空间群C 2/ m 中结晶，阳离子在 4 g位点混合，留下 2 a位点优先为 Te 或 Sb。同样，单独的 Li ⁺离子主要出现在层间位置。这两种化合物在 8K 下的比热都表现出广泛的异常，这对 8T 来说是稳健的。磁化率中不存在相应的异常，但可以从其导数 d χ ( T )/d T 中恢复。我们确定了Li _4.47 Cr _0.53 TeO ₆和 Li _3.88 Cr _1.12 SbO ₆的磁异常温度 ( T _a ) 比热分别为 5.9K 和 6.7K。尽管物理性质表明低温异常，但中子衍射数据并未显示低至 1.5K 的磁信号或结构异常。这排除了任一化合物中常规的长程有序磁性基态。结合比热、中子衍射和电子顺磁共振的结果，我们提出了 Cr ³⁺的耗尽蜂窝晶格的情景，其中主要的短程磁相关性作为标题化合物的磁基态。