论文标题
磁相图和簇玻璃的类似1阶段1石墨插入的FECL $ _3 $的特性
Magnetic phase diagram and cluster glass-like properties of stage-1 graphite intercalated FeCl$_3$
论文作者
论文摘要
我们通过DC和AC磁敏感性，热电器磁化和磁场依赖性磁化测量值的组合，对阶段1石墨插入的FECL $ _3 $的磁力进行了全面研究。该范德华系统带有中心对称性蜂窝状晶格，由于插入而结合了挫败感和混乱，并且可能托管拓扑上的非平凡磁相。我们的研究以$ t_ {f1} \ $ 4.2 k的价格确定了两个磁相变点，在$ t_ {f2} \ $ 2.7 k处确定。我们发现，对于$ t> t_ {f1} $，promagnetic状态由短范围的铁磁性相关性主导。这些积累远高于$ t_ {f1} $，并导致磁熵的重大变化，它达到$ΔS_M^{pk} = $ -5.52 j kg $^{ - 1} $ k $^{ - 1} $ 7 t。 $ t $ <$ <$ $ t_ {f2} $我们的结果表明低温远距离排序状态的发作。实验结果的分析导致了一个复杂的相图，这可以作为未来研究中搜索该系统中拓扑非平凡阶段的参考。
We present a comprehensive investigation of the magnetic properties of stage-1 graphite intercalated FeCl$_3$ using a combination of DC and AC magnetic susceptibility, thermoremanent magnetization and field dependent magnetization measurements. This van der Waals system, with a centrosymmetric honeycomb lattice, combines frustration and disorder, due to intercalation, and may be hosting topologically non-trivial magnetic phases. Our study identifies two magnetic phase transitions at $T_{f1} \approx $ 4.2 K and at $T_{f2} \approx $ 2.7 K. We find that the paramagnetic state, for $T > T_{f1}$, is dominated by short-range ferromagnetic correlations. These build up well above $T_{f1}$ and lead to a significant change in magnetic entropy, which reaches $ΔS_M^{Pk} = $ -5.52 J kg$^{-1}$ K$^{-1}$ at 7 T. Between $T_{f1}$ and $T_{f2}$ we observe slow spin dynamics characteristic of a cluster glass-like state, whereas for $T$ $ < $ $T_{f2}$ our results indicate the onset of a low temperature long range ordered state. The analysis of the experimental results leads to a complex phase diagram, which may serve as a reference for future investigations searching for topological non-trivial phases in this system.
