Physical Properties of[A6Cl][Fe24Se26](A=K,Rb)with Self-Similar Structure  

作　　者：Shaohua Wang Qiangwei Yin Hechang Lei 王少华;殷蔷薇;雷和畅(Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices,Renmin University of China,Beijing 100872)

机构地区：[1]Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices,Renmin University of China,Beijing 100872

出　　处：《Chinese Physics Letters》2020年第1期74-77,共4页中国物理快报（英文版）

基　　金：the National Key R&D Program of China under Grant No.2016YFA0300504;the National Natural Science Foundation of China(Nos.11574394,11774423,11822412);the Fundamental Research Funds for the Central Universities,and the Research Funds of Renmin University of China(RUC)(15XNLQ07,18XNLG14,19XNLG17).

摘　　要：We have successfully synthesized two novel compounds[A6Cl][Fe24Se26](A=K,Rb).The key structural units of them are FeSe octamers,consisting of edge-shared FeSe4 tetrahedra.Two kinds of FeSe octamer layers with different connection configurations stack along the c axis,forming a three-dimensional(3D)TiAl3-type structure.Interestingly,the 3D structural topology of these ocatmers in one unit cell is similar to the local atomic arrangement of themselves,i.e.,self-similarity in structure.Physical property characterizations indicate that both the compounds exhibit insulating antiferromagnetism with Neel temperatures Tn^110K and 75K for[K6Cl][Fe24Se26]and[Rb6Cl][Fe24Se26].

关 键 词：structure. [Fe Se2 

分 类 号：O469[理学—凝聚态物理]