论文标题
部分可观测时空混沌系统的无模型预测
Magnetism on the stretched diamond lattice in lanthanide orthotantalates
论文作者
论文摘要
Fergusonite和Scheelite Crystal结构中的磁性Ln $^{3+} $离子形成了扭曲或拉伸的钻石晶格，预计将托有外来的磁接地状态。在这项研究中，合成了Fergusonite Oromthantares的多晶样品$ M $ -LNTAO $ _4 $（LN = ND，SM，EU，GD，TB，TB，TB，DY，HO，HO，HO，HO，HO，HO，HO），然后使用粉末衍射和散装磁力测定法和热容量进行表征。 tbtao $ _4 $在2.25 K处订购反铁磁性，以$ \ vec {k} = 0 $，磁性空间集团14.77（$ p2_1 $$'/c $）和与$ a $ a $ a $ axis的相似的磁性磁单元。在所研究的其他材料中未观察到磁性顺序，使外来磁性状态的可能性在$ t <2 $ k处。
The magnetic Ln$^{3+}$ ions in the fergusonite and scheelite crystal structures form a distorted or stretched diamond lattice which is predicted to host exotic magnetic ground states. In this study, polycrystalline samples of the fergusonite orthotantalates $M$-LnTaO$_4$ (Ln = Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er) are synthesized and then characterized using powder diffraction and bulk magnetometry and heat capacity. TbTaO$_4$ orders antiferromagnetically at 2.25 K into a commensurate magnetic cell with $\vec{k}=0$, magnetic space group 14.77 ($P2_1$$'/c$) and Tb moments parallel to the $a$-axis. No magnetic order was observed in the other materials studied, leaving open the possibility of exotic magnetic states at $T<2$ K.
