Crystal growth of CeMn_(0.85)Sb_(2):Absence of magnetic order of Ce-sublattice  

作　　者：李勇 苗杉杉 冯海 杨槐馨 石友国 Yong Li;Shan-Shan Miao;Hai Feng;Huai-Xin Yang;You-Guo Shi(Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Materials Laboratory,Dongguan 523808,China)

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100190,China [3]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China [4]Songshan Lake Materials Laboratory,Dongguan 523808,China

出　　处：《Chinese Physics B》2023年第6期569-575,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.U22A6005,U2032204,and 12104492);the Guangdong Major Scientific Research Project(Grant No.2018KZDXM061);the National Key Research and Development Program of China(Grant No.2021YFA1400401);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB33010000);the K.C.Wong Education Foundation(Grant No.GJTD-2018-01);the Informatization Plan of Chinese Academy of Sciences(Grant No.CAS-WX2021SF0102)。

摘　　要：Single crystals of CeMn_(0.85)Sb_(2) have been successfully synthesized by using the Bi as flux.Analysis of single crystal x-ray diffraction data confirms that CeMn_(0.85)Sb_(2) crystallizes in the HfCuSi_(2)-type structure with the space group P4/nmm(No.129).In the case of H‖c,CeMn_(0.85)Sb_(2) displays a robust antiferromagnetic transition at~160 K for Mn-sublattice,and there is no sign of magnetic order regarding Ce-sublattice.In the case of the Mn-sublattice shows signs of magnetic order at 160 K and 116 K,indicating a possible spin reorientation.There is no sign of magnetic order for the Cesublattice either,but,alternating current magnetic susceptibility measurements reveal a spin glass state below 18 K in the case of H⊥c.Isothermal magnetization curves measured below magnetic order with H⊥c show saturation and even large hysteresis at 2 K,indicating the presence of a ferromagnetic component.In addition,a field-induced spin-flop transition is observed in the case of H⊥c,indicating a field-induced spin reorientation of Mn spins.Electrical resistivity measurements indicate a metallic nature for CeMn_(0.85)Sb_(2) and large anisotropy which is consistent with its quasi-two-dimensional layered structure.

关 键 词：CeMn_(0.85)Sb_(2) MAGNETISM spin glass layered structure square lattice 

分 类 号：O469[理学—凝聚态物理]