Magnetic properties,magnetoresistivity and magnetocaloric effect in GdxLa1-x-MnSi alloys

稀土学报(英文版), 2009, 27(4): 684-687. doi: 10.1016/S1002-0721(08)60316-6

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.Physics Department,Moscow State University,119992,Moscow,Russia;International Laboratory of High Magnetic Fields and Low Temperatures,Wroclaw,Poland

2.Physics Department,Moscow State University,119992,Moscow,Russia

3.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

4.Physics Department,Moscow State University,119992,Moscow,Russia

5.Physics Department,Moscow State University,119992,Moscow,Russia

6.Polish Academy of Sciences,Trzebiatowski Institute of Low Temperatures and Structure Research,P.O.Box 1410,50-950 Wroclaw 2,Poland

基金项目: the Federal Program on Support of Leading Scientific Schools(HIII-8701.2006.2)

Magnetic properties,magnetoresistivity and magnetocaloric effect in GdxLa1-x-MnSi alloys

T.I.Ivanova ^1, , S.A.Nikitin ^2, , W.Suski ^3, , GA.Tskhadadze ^4, , I.A.Ovtchenkova ^5, , D.Badurski ^6,

1.Physics Department,Moscow State University,119992,Moscow,Russia;International Laboratory of High Magnetic Fields and Low Temperatures,Wroclaw,Poland

2.Physics Department,Moscow State University,119992,Moscow,Russia

4.Physics Department,Moscow State University,119992,Moscow,Russia

5.Physics Department,Moscow State University,119992,Moscow,Russia

6.Polish Academy of Sciences,Trzebiatowski Institute of Low Temperatures and Structure Research,P.O.Box 1410,50-950 Wroclaw 2,Poland

Keywords： magnetocaloric effect

The results of magnetization,magnetoresistivity and magnetocaloric 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 antiferromagnetic 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.

参考文献

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Magnetic properties,magnetoresistivity and magnetocaloric effect in GdxLa1-x-MnSi alloys

参考文献