Author/Authors :
Wang، نويسنده , , Hao and Li، نويسنده , , W.Q and Wong، نويسنده , , S.P and Cheung، نويسنده , , W.Y. and Ke، نويسنده , , N and Xu، نويسنده , , J.B and Lu، نويسنده , , Xiang and Yan، نويسنده , , Xin، نويسنده ,
Abstract :
The composition and annealing temperature dependence of magnetic domain structures in sputtered magnetoresistance (Ni74Fe16Co10)xAg1−x (x=9–41 at.%) granular films were studied by magnetic force microscopy. X-ray diffraction results showed that the annealed (Ni74Fe16Co10)xAg1−x films consisted of body-centered cubic NiFeCo alloy nanocrystals embedded in the face-centered cubic Ag matrix. Both short-range and long-range magnetic structures were observed in these films. It was found that the short-range magnetic structures with single domains corresponded to the highest giant magnetoresistance values, while the long-range magnetic structures with larger domain dimensions corresponded to the lower values.
Keywords :
Granular films , MFM , Magnetic domain structures , GMR
