Incommensurate-commensurate magnetic phase transition in double tungstate Li_(2)Co(WO_4)_(2)  

作　　者：Xiyu Chen Ning Ding Meifeng Liu Tao Zou V.Ovidiu Garlea Jingwen Gong Fei Liu Yunlong Xie Lun Yang Shuhan Zheng Xiuzhang Wang Shuai Dong TCharlton Jun-Ming Liu 陈西煜;丁宁;刘美风;邹涛;V.Ovidiu Garlea;龚婧雯;刘飞;谢云龙;杨伦;郑书翰;王秀章;董帅;T.Charlton;刘俊明(Institute for Advanced Materials,Hubei Normal University,Huangshi 435002,China;School of Physics,Southeast University,Nanjing 211189,China;Collaborative Innovation Center of Light Manipulations and Applications,Shangdong Normal University,Jinan 250358,China;Neutron Scattering Division,Oak Ridge National Laboratory,Oak Ridge,Tennessee 37831,USA;Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China)

机构地区：[1]Institute for Advanced Materials,Hubei Normal University,Huangshi 435002,China [2]School of Physics,Southeast University,Nanjing 211189,China [3]Collaborative Innovation Center of Light Manipulations and Applications,Shangdong Normal University,Jinan 250358,China [4]Neutron Scattering Division,Oak Ridge National Laboratory,Oak Ridge,Tennessee 37831,USA [5]Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China

出　　处：《Chinese Physics B》2022年第4期61-66,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11834002,12074111,and 11704109);the National Key R&D Project of China(Grant No.2016YFA0300101)。

摘　　要：Magnetic susceptibility,specific heat,and neutron powder diffraction measurements have been performed on polycrystalline Li_(2)Co(WO_4)_(2)samples.Under zero magnetic field,two successive magnetic transitions at T_(N1)~9.4 K and T_(N2)~7.4 K are observed.The magnetic ordering temperatures gradually decrease as the magnetic field increases.Neutron diffraction reveals that Li_(2)Co(WO_4)_(2)enters an incommensurate magnetic state with a temperature dependent k between T_(N1)and T_(N2).The magnetic propagation vector locks-in to a commensurate value k=(1/2,1/4,1/4)below T_(N2).The antiferromagnetic structure is refined at 1.7 K with Co2+magnetic moment 2.8(1),μ_B,consistent with our first-principles calculations.

关 键 词：Li_(2)Co(WO_4)_(2) incommensurate-commensurate magnetic transition 

分 类 号：TQ131.11[化学工程—无机化工]