Multiple magnetic transitions in single crystals of Ce12Fe57.5As41 and La12Fe57.5As41

作     者：Wei Wu Jianlin Luo 

作者机构：Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Collaborative Innovation Center of Quantum MatterBeijing 100084China 

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：2018年第61卷第12期

页      面：53-57页

核心收录：

学科分类：07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11674375,and 11634015) the National Basic Research Program of China(Grant Nos.2015CB921300,and 2017YFA0302901) and the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB07020200) 

主　　题：multiple magnetic phase transitions metamagnetic transition Kondo scattering 

摘      要：Measurements of magnetic and transport properties were performed on needle-shaped single crystals of Ce_(12)Fe_(57.5)As_(41)and La_(12)Fe_(57.5)As_(41).The availability of a complete set of data enabled a side-by-side comparison between these two rare earth *** compounds exhibited multiple magnetic orders within 2-300 K and metamagnetic transitions at various *** transitions with Curie temperatures of 100 and 125 K were found for Ce_(12)Fe_(57.5)As_(41)and La_(12)Fe_(57.5)As_(41),respectively,followed by antiferromagnetic type spin reorientations near Curie *** magnetic properties underwent complex evolution in the magnetic field for both *** antiferromagnetic phase transition at about 60 K and 0.2 T was observed merely for Ce_(12)Fe_(57.5)As_(41).The field-induced magnetic phase transition occurred from antiferromagnetic to ferromagnetic structure.A strong magnetocrystalline anisotropy was evident from magnetization measurements of Ce_(12)Fe_(57.5)As_(41).A temperature-field phase diagram was present for these two rare earth *** addition,a logarithmic temperature dependence of electrical resistivity was observed in the two compounds within a large temperature range of 150-300 K,which is rarely found in 3D-based *** may be related to Kondo scattering described by independent localized Fe 3d moments interacting with conduction electrons.