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Perpendicular Magnetic Anisotropy in Amorphous Ferromagnetic CoSiB/Pt Multilayers

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Magnetic anisotropy properties of amorphous ferromagnetic CoSiB/Pt multilayers with perpendicular magnetic anisotropy (PMA, K u) were systematically investigated as a function of CoSiB layer thickness (t coSiB) and Pt layer thickness (t Pt). In two series of [CoSiB t coSiB/Pt t Pt]5 multilayers, the perpendicular coercivity (H c) increased to reach a maximum and then decreased with further increase in both t coSiB and t Pt, due to intermixing of CoSiB/Pt interfaces. Particularly, using the amorphous soft magnetic CoSiB, the coercivity became very sensitive to the CoSiB thickness. These multilayer films exhibited a high K u of 2 × 106 erg/cc and a high H c of 360 Oe with marked squareness. It was found that even after annealing at 350 °C, the CoSiB/Pt multilayers had a high PMA and their H c increased.
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Keywords: COERCIVITY; COSIB; MAGNETIC MULTILAYERS; PERPENDICULAR MAGNETIC ANISOTROPY; THIN FILMS

Document Type: Research Article

Publication date: 2011-01-01

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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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