典型文献
Spin freezing in the van der Waals material Mn2Ga2S5
文献摘要：
Geometrical frustration in low-dimensional magnetic systems has been an intriguing research aspect,where the sup-pression of conventional magnetic order may lead to exotic ground states such as spin glass or spin liquid.In this work we report the synthesis and magnetism study of the monocrystalline Mn2Ga2S5,featuring both the van der Waals structure and a bilayered triangular Mn lattice.Magnetic susceptibility reveals a significant antiferromagnetic interaction with a Curie-Weiss temperature θw～-260 K and a high spin S=5/2 Mn2+state.However,no long range magnetic order has been found down to 2 K,and a spin freezing transition is found to occur at around 12 K well below its θw.This yields a frustra-tion index of f=-θw/Tf ≈ 22,an indication that the system is highly frustrated.The absence of a double-peak structure in magnetic specific heat compared with the TM2S4 compounds implies that the spin freezing behavior in Mn2Ga2S5 is a result of the competition between exchange interactions and the 2D crystalline structure.Our results suggest that the layered Mn2Ga2S5 would be an excellent candidate for investigating the physics of 2D magnetism and spin disordered state.
文献关键词：
中图分类号：
作者姓名：
Jie Shen;Xitong Xu;Miao He;Yonglai Liu;Yuyan Han;Zhe Qu
作者机构：
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions,CAS Key Laboratory of Photovoltaic and Energy Conservation Materials,High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Science Island Branch of Graduate School,University of Science and Technology of China,Hefei 230026,China
文献出处：
引用格式：
[1]Jie Shen;Xitong Xu;Miao He;Yonglai Liu;Yuyan Han;Zhe Qu-.Spin freezing in the van der Waals material Mn2Ga2S5)[J].中国物理B（英文版）,2022(06):122-127
A类：
Mn2Ga2S5,Mn2+state,frustra,TM2S4
B类：
Spin,freezing,van,Waals,material,Geometrical,frustration,dimensional,systems,has,been,intriguing,research,aspect,where,sup,pression,conventional,may,lead,exotic,ground,states,such,spin,glass,liquid,In,this,work,report,synthesis,magnetism,study,monocrystalline,featuring,both,structure,bilayered,triangular,lattice,Magnetic,susceptibility,reveals,significant,antiferromagnetic,Curie,Weiss,temperature,However,long,range,found,down,transition,occur,around,well,below,its,This,yields,Tf,indication,that,highly,frustrated,absence,double,peak,specific,heat,compared,compounds,implies,behavior,competition,between,exchange,interactions,2D,Our,results,suggest,would,excellent,candidate,investigating,physics,disordered
AB值：
0.56124
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