Abstract
Effect of 200 MeV Ag ion irradiation on giant magnetoresistance in Fe/Cr multilayers has been studied. Irradiation is found to modify the interface structure without affecting the morphological features like grain size or texture. The GMR shows a monotonous decrease with irradiation dose, the maximum decrease in GMR being as large as 70% at an irradiation fluence of 1.0 × 10 13 ions/cm 2. It is suggested that intermixing at the interfaces along with changes in the interface roughness due to formation of asperities at the surface of the float glass substrate may be the possible cause of such a large change in GMR with irradiation.
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