Multiple magnetic transitions and magnetocaloric effect of Tb_(4)Coln alloy

查看全文 作　　者：Remya [1]U.D.;Arun [1]K.;Swathi [1]S.;Athul [1]S.R.;Andrea [2]Dzubinska;Marian [3,4]Reiffers;Nagalakshmi [1]R.

机构地区：[1]Intermetallics and Non-linear Optics Laboratory,Department of Physics,National Institute of Technology,Tiruchirappalli,620015,India;[2]CPM-TIP,University Pavol Jozef Safarik,04011,Košice,Slovakia;[3]Faculty of Humanities and Natural Sciences,Presov University,Presov,Slovakia;[4]Institute of Experimental Physics,SAS,Kosice,Slovakia

出　　处：《Journal of Rare Earths》索引2023年第41卷第11期,共8页

基　　金：Project supported by the University Science Park TECHNICOM for Innovation Applications supported by Knowledge Technology (313011D232);supported by the Research&Development Operational Programme funded by the ERDF;VEGA1/0705/20,1/0404/21。 摘　　要：We report on the magnetic,magnetocaloric,thermal,and electrical transport properties of Tb_(4)Coln alloy,which crystallizes in two phases,Tb_6Co_(2.1)In_(0.8)(space group Immm)and Tb_(2)In_(0.9)Co_(0.1)(space group P6_(3)/mmc),respectively.The alloy reveals three successive magnetic transitions around T_(1)(163 K),T_(2)(50 K),and T_(3)(29 K),respectively,associated with paramagnetic to ferromagnetic transition and two sequential antiferromagnetic transitions.The low-temperature transition T_(3) follows the first-order magnetic behavior and exhibits the field-induced magnetic transition.Meanwhile,T_(2) and T_(1) are found to be second-order in nature which opens a possibility for hysteresis-free magnetocaloric application.The magnetocaloric properties are determined using different magnetocaloric figures of merits such as-ΔS_(M),ΔT_(ad).RCP,and TEC(10).Additionally,the universal curve behavior in the isothermal entropy change unveils the variation in critical exponents around T_(1) and T_(2) due to the magnetic inhomogeneity in the alloy.Besides,the electrical transport properties of the metallic alloy denote the maximum magnetoresistance of-10%around T_(1). 关键词：Multiple magnetic transitions Order of magnetic transition Magnetocaloric effect MAGNETORESISTANCE Universal curve behavior Rare earths

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Multiple magnetic transitions and magnetocaloric effect of Tb_(4)Coln alloy

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