论文标题
氟化物和硫化硫化硫化岩岩晶格材料的沮丧磁性
Frustrated Magnetism in Fluoride and Chalcogenide Pyrochlore Lattice Materials
论文作者
论文摘要
Pyrochlore Lattices是在两种重要类别的材料类别中发现的 - $ A_2B_2X_7 $ Pyrochlore家族和$ AB_2X_4 $ Spinel家族 - 是典型的三维沮丧的Lattice Architection。虽然历史上氧化物（$ x = $ 〜o）在该领域中扮演了主角角色，但过去十年中，材料合成的突破导致了氟化物的出现（$ x = $ 〜f）和chalcogenide（$ x = $ x = $ 〜S，SE，SE）Pyrochlore lattice材料。在这项研究的更新中，我们总结了三个非氧化物pyrochlore晶格材料的磁性沮丧基态的最新进展：（i）$ 3D $ - 过渡金属氟化物pyroide pyrochlores，（ii）稀有的地球辣椒剂紫杉醇，以及（iii）（iii）Chalcogenide spinels搭配Brearochletherthertherthertherthertherthe pyrothlethlethlethlethlethlethlethlethe。我们强调了阴离子的变化如何由于晶体电场效应而改变单个离子自旋各向异性，稳定新磁元素的掺入并大大改变交换途径，从而导致新的磁接地状态。我们还考虑了一系列未来的方向 - 材料有可能定义沮丧的磁性研究的下一个十年。
Pyrochlore lattices, which are found in two important classes of materials -- the $A_2B_2X_7$ pyrochlore family and the $AB_2X_4$ spinel family -- are the quintessential 3-dimensional frustrated lattice architecture. While historically oxides ($X =$~O) have played the starring role in this field, the past decade has seen materials synthesis breakthroughs that have lead to the emergence of fluoride ($X =$~F) and chalcogenide ($X =$~S, Se) pyrochlore lattice materials. In this Research Update, we summarize recent progress in understanding the magnetically frustrated ground states in three families of non-oxide pyrochlore lattice materials: (i) $3d$-transition metal fluoride pyrochlores, (ii) rare earth chalcogenide spinels, and (iii) chromium chalcogenide spinels with a breathing pyrochlore lattice. We highlight how the change of anion can modify the single ion spin anisotropy due to crystal electric field effects, stabilize the incorporation of new magnetic elements, and dramatically alter the exchange pathways and thereby lead to new magnetic ground states. We also consider a range of future directions -- materials with the potential to define the next decade of research in frustrated magnetism.
