Field-induced anisotropic magnetic phase transitions and tricritical phenomena in GdCr_(6)Ge_(6)

作     者：Zan Du Azizur Rahman Jiangpeng Song Jun Zhao Wei Liu Jiyu Fan Chunlan Ma Min Ge Yimin Xiong Li Pi Lei Zhang Yuheng Zhang 

作者机构：Anhui Key Laboratory of Condensed Matter Physics at Extreme ConditionsHigh Magnetic Field LaboratoryHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China Department of PhysicsUniversity of Science and Technology of ChinaHefei 230026China Institutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationAnhui UniversityHefei 230601China Department of Applied PhysicsNanjing University of Aeronautics and AstronauticsNanjing 210016China Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy ApplicationSchool of Physical Science and TechnologySuzhou University of Science and TechnologySuzhou 215009China Department of PhysicsSchool of Physics and Optoelectronics EngineeringAnhui UniversityHefei 230601China Hefei National LaboratoryHefei 230028China High Magnetic Field Laboratory of Anhui ProvinceHefei 230031China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2023年第66卷第9期

页      面：109-118页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12074386,11874358,U1432138,11974181,12204006,and 12250410238) the Collaborative Innovation Program of Hefei Science Center,CAS(Grant No.2021HSC-CIP006) the Alliance of International Science Organizations(Grant No.ANSO-VF-2022-03) the Key Project of Natural Scientific Research of Universities in Anhui Province(Grant No.K120462009) the Anhui Provincial Natural Science Foundation(Grant No.2108085QA21) supported by the High Magnetic Field Laboratory of Anhui Province 

主　　题：field-induced phase transition RT_(6)X_(6)compounds critical analysis tricritical phenomenon anisotropic interaction 

摘      要：The interaction between complex magnetic structures and non-trivial band structures in ternary rare-earth GdCr_(6)Ge_(6) induces exotic and abundant electro-magnetic *** this work,we perform a systematical investigation on critical behaviors and magnetic properties of the single-crystal GdCr_(6)Ge_(6).The temperature,field,and angle dependence of magnetization unveils strong magnetic anisotropy along the c-axis and isotropic characteristic in the *** exponentsβ=0.252(1),γ=0.905(9),δ=4.606(3)for H//ab,andβ=0.281(3),γ=0.991(8),δ=4.541(5)for H//c are obtained by the modified Arrott plot method(MAP)and critical isotherm(CI)*** determined exponents for both directions are consistent with the theoretical prediction of a tricritical mean-field *** on detailed magnetization measurements and universality scaling,comprehensive magnetic phase diagrams of GdCr6Ge6for H//ab and H//c are constructed,which reveal that the external field induces a ferromagnetic(FM)transition for H//ab while a ferrimagnetic(FIM)one for H//*** tricritical points are determined for H//ab(11.2 K,266.3 Oe)and H//c(11.3 K,3.3 kOe)on the phase diagrams,*** field-induced anisotropic magnetic configurations and multiple phases are clarified,where the moments of Gd and Cr form FM coupling for H//ab while FIM one for H//c via the interaction between Gd and Cr sublattices.