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Nanostructured SmCo5 Thin Films with Perpendicular Anisotropy Formed in a Wide Range of Sm–Co Compositions

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In this work, we prepared SmCo5 thin films with (000l) texture exhibiting perpendicular anisotropy in a wide range of SmxCo100−x compositions (x = 13.2∼37.0) on Cu/Ta underlayers. At a composition of Sm16.7Co83.3(SmCo5), the SmCo5 film exhibits a maximum perpendicular coercivity of 18.2 kOe, which is attributed to a good crystallinity and an excellent (000l) texture. The SmCo5 (000l) peaks are shifted to smaller angles compared to the standard powder sample which indicates the formation of a SmCoCu alloy through Cu diffusion. The EDX result for this sample gives a composition of SmCo3Cu2.1 which confirms Cu diffusion into the SmCo5 layer. TEM image shows that SmCo5 film is well crystallized with a grain size of 50 nm.
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Keywords: MAGNETIC RECORDING; PERPENDICULAR ANISOTROPY; SMCO5; THIN FILMS

Document Type: Research Article

Publication date: 2011-03-01

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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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