层内和插层高熵准二维化合物的命名
Designation of Intra-layer and Intercalated High Entropy Quasi-2D Compounds
摘要：
在这里，我们设计了两个很有前途的计划，实现高熵结构的一系列准二维化合物，过渡金属二硫属化物（TMDC）。在层内高熵计划中，在MX2板片中获得了具有高熵结构的（HEM）X2化合物，这里HEM是指高熵金属，例如TiZrNbMoTa。在富Mo的HEMX 2中发现了Tc~7.4 K的超导电性。另一方面，在插层方案中，我们将HEM原子（FeCoCrNiMn）插入到MX2片层之间，得到了一系列（HEM）xMX 2化合物，x在0~0.5之间，其中HEM主要由3d过渡金属元素组成，如FeCoCrNiMn。随着多组元磁性原子的引入，产生了具有强二维特性的铁磁自旋玻璃态。通过调节x含量，在高熵插层中观察到3种2：1*1三角晶格和2种超晶格：\sqrt 3* \sqrt 3和\sqrt 3*2，分别在x=0.333和x>0.5时观察到。同时，二维高熵磁平面中的自旋阻挫随着\sqrt 3* \sqrt 3相的发展而增强，当转变为\sqrt 3*2相时显著减小.我们所发现的高熵TMDCs和二维高熵结构具有在低维高熵结构中发现新物理和应用的巨大潜力。
英文摘要：
Here, we designed two promising schemes to realize the high-entropy structure in a series of quasi-two-dimensional compounds, transition metal dichalcogenides (TMDCs). In the intra-layer high-entropy plan, (HEM)X2 compounds with high-entropy structure in the MX2 slabs were obtained, here HEM means high-entropy metals, such as TiZrNbMoTa. And superconductivity with a Tc~7.4 K was found in a Mo-rich HEMX2. On the other hand, in the intercalation plan, we intercalated HEM-atoms (FeCoCrNiMn) into the gap between the sandwiched-MX2 slabs resulting in a series of (HEM)xMX2 compounds, x in the range of 0~0.5, in which HEM is mainly composed of 3d transition metal elements, such as FeCoCrNiMn. As the introduction of multi-component magnetic atoms, ferromagnetic spin-glass states with strong 2D characteristics ensued. Tuning the x content, three kinds of two in the high-entropy intercalated layer were observed including the 1*1 triangular lattice and two kinds of superlattices \sqrt3*\sqrt3 and \sqrt3*2 in x=0.333 and x>0.5, respectively. Meanwhile, the spin frustration in the two-dimensional high-entropy magnetic plane will be enhanced with the development of \sqrt3*\sqrt3 and will be reduced significantly when changing into the \sqrt3*2 phase. The high-entropy TMDCs and versatile two-dimensional high-entropy structures found by us possess great potentials to find new physics in low-dimensional high-entropy structures and future applications.
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