Magnetic properties, magnetoresistivity and magnetocaloric effect in Gd_xLa_(1-x)-MnSi alloys

作     者：T.I.Ivanova S.A.Nikitin W.Suski G.A.Tskhadadze I.A.Ovtchenkova D.Badurski 

作者机构：Physics Department Moscow State University 119992 Moscow Russia International Laboratory of High Magnetic Fields and Low Temperatures Wroclaw Poland Polish Academy of Sciences Trzebiatowski Institute of Low Temperatures and Structure Research P.O.Box 1410 50-950 Wroclaw 2 Poland 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2009年第27卷第4期

页      面：684-687页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Federal Program on Support of Leading Scientific Schools (НШ-8701.2006.2) 

主　　题：magnetocaloric effect magnetoresistivity magnetic phase Iransition itinerant magnetism rare earths 

摘      要：The results of magnetization, magnetoresistivity and magnetocalofic effect （MCE） studies performed on polycrystalline samples of the GdxLa1-xMnSi （x=0.5, 0.6, 0.7, 0.8, 0.9, 1.0） compounds were presented. Complex measurements were carried out on the GdxLa1-xMnSi compounds to determine the influence of substitution in the rare earth （R） sublattice on the magnetic and related properties of these compounds. The compounds with x≤0.6 demonstrated two magnetic phase transitions （ferromagnetic to paramagnetic and antiferro- magnetic to ferromagnetic） both of which were first order. Anomalies in the magnetocaloric effect, electroresistivity and magnetoresistivity were observed in the temperature ranges of the magnetic phase transitions. The temperature dependences of MCE and magnetoresistivity for these compounds correlated with the temperature dependence of magnetization.