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Excimer Laser Irradiation Effects on Soft Magnetic Properties of Sputtered Iron Nitride Thin Films

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Effect of pulse laser irradiation on soft magnetic properties of reactively sputtered iron nitride thin film has been studied. The as-deposited films exhibit large coercivity in the range 54 Oe to 148 Oe. Laser irradiation results in remarkable decrease in the coercivity of the films, the minimum value achieved being 8 Oe. X-ray diffraction measurements evidence structural relaxation in the films, resulting in densification. Surface roughness of the films exhibits only a marginal increase after laser irradiation. The observed decrease in the coercivity may be attributed to the relaxation of some quenched-in stresses associated with structural relaxation in the films. Irradiation as a function of energy density of laser pulse shows that an optimum energy density is required to achieve the best soft magnetic properties, which can vary from sample to sample.


Document Type: Research Article


Publication date: 2008-08-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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