Anantharaman, M R; Pookat, G; Hysen, T; Al-Omari, I A; Al-Harthi, S H; Lisha, R; Avasthi, D K(Elsevier, June 10, 2013)
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Abstract:
We have investigated the effects of swift heavy ion irradiation on thermally evaporated 44 nm thick,
amorphous Co77Fe23 thin films on silicon substrates using 100 MeV Ag7+ ions fluences of 1 1011 ions/
cm2, 1 1012 ions/cm2, 1 1013 ions/cm2, and 3 1013 ions/cm2. The structural modifications upon
swift heavy irradiation were investigated using glancing angle X-ray diffraction. The surface morphological
evolution of thin film with irradiation was studied using Atomic Force Microscopy. Power spectral
density analysis was used to correlate the roughness variation with structural modifications investigated
using X-ray diffraction. Magnetic measurements were carried out using vibrating sample magnetometry
and the observed variation in coercivity of the irradiated films is explained on the basis of stress relaxation.
Magnetic force microscopy images are subjected to analysis using the scanning probe image processor
software. These results are in agreement with the results obtained using vibrating sample
magnetometry. The magnetic and structural properties are correlated
Description:
Nuclear Instruments and Methods in Physics Research B 310 (2013) 81–86