Author/Authors :
Xia، نويسنده , , Z.C and Yuan، نويسنده , , S.L. and Feng، نويسنده , , W. and Zhang، نويسنده , , L.J. and Zhang، نويسنده , , G.H. and Tang، نويسنده , , J. and Liu، نويسنده , , L. and Liu، نويسنده , , D.W. and Zheng، نويسنده , , Q.H. and Chen، نويسنده , , L. and Fang، نويسنده , , Z.H. and Liu، نويسنده , , S. and Tang، نويسنده , , C.Q.، نويسنده ,
Abstract :
An enhanced magnetoresistance and a two-fold effect result from impurity dopant were observed in composites of La0.67Ca0.33MnO3/YSZ and La0.67Ca0.33MnO3/Fe3O4. Where YSZ represents yttria-stabilized zirconia and the doping level of both YSZ and Fe3O4 is 1 mol%. Different electrical and magnetic transport properties, in particular a lower field magnetization behavior, were observed between pure La0.67Ca0.33MnO3 and the impurity doped La0.67Ca0.33MnO3 composites. Compared with pure La0.67Ca0.33MnO3, a possible interpretation is presented by considering the influences of YSZ and Fe3O4 on the structure of grain boundaries and/or surfaces of La0.67Ca0.33MnO3grains.
