Magnetocaloric and magneto-transport properties of Gd_(10)Co_(20)Si_(70) alloy  

作　　者：T.P.Rashid K.Arun Ivan Curlik Sergej Ilkovic Marian Reiffers ANDrea Dzubinska R.Nagalakshmi 

机构地区：[1]Intermetallics and Non-Linear Optics Laboratory,Department of Physics, National Institute of Technology(India) [2]Faculty of Humanities and Natural Sciences,Presov University [3]Faculty of Natural Sciences,P.J.Safarik University

出　　处：《Journal of Rare Earths》2019年第1期74-79,M0004,共7页稀土学报（英文版）

基　　金：supported by the result of the Project implementation:University Science Park TECHNICOM for Innovation Applications Supported by Knowledge Technology(ITMS:26220220182);by the Research&Development Operational Programme funded by the ERDF and VEGA1/0956/17,VEGA 1/0611/18 and APVV-16-0079

摘　　要：We report the results of magnetic, thermodynamic, transport and magnetocaloric effect (MCE) studies of newly synthesized Gd_(10)Co_(20)Si_(70) alloy. These measurements confirm an antiferromagnetic transition at T_N=9 K. Both MCE and magnetoresistance (MR) show quadratic dependence on the applied magnetic field, indicating the presence of spin fluctuations in the alloy. The maximum values of the magnetic entropy change determined from the isothermal magnetization data for magnetic field change of 7 and9 T are found to be 10.5 and 15.6 J/kg·K, respectively. As a consequence of the spin fluctuations effect, the MCE peaks are pulled towards high temperature side as asymmetrically broadened peak. The MR attains a large positive value of 73%at 2 K in 8 T. The large MR and reversible MCE make this alloy an attractive multifunctional magnetic material.We report the results of magnetic, thermodynamic, transport and magnetocaloric effect(MCE) studies of newly synthesized Gd_(10)Co_(20)Si_(7 O) alloy. These measurements confirm an antiferromagnetic transition at T_N=9 K. Both MCE and magneto resistance(MR) show quadratic dependence on the applied magnetic field, indicating the presence of spin fluctuations in the alloy. The maximum values of the magnetic entropy change determined from the isothermal magnetization data for magnetic field change of 7 and9 T are found to be 10.5 and 15.6 J/kg·K, respectively. As a consequence of the spin fluctuations effect, the MCE peaks are pulled towards high temperature side as asymmetrically broadened peak. The MR attains a large positive value of 73% at 2 K in 8 T. The large MR and reversible MCE make this alloy an attractive multifunctional magnetic material.

关 键 词：RARE earth-transition metal ALLOY Magnetic properties MAGNETOCALORIC effect MAGNETORESISTANCE Spin FLUCTUATIONS 

分 类 号：TF[冶金工程]