Effect of the TiN content in the Pd-TiN seed layer on the microstructure and magnetic properties of Co/Pd multilayered media

Title
Effect of the TiN content in the Pd-TiN seed layer on the microstructure and magnetic properties of Co/Pd multilayered media
Authors
김성만천동원이정중정원용
Keywords
Co/Pd multilayer; Pd-TiN seed layer; TiN content; Perpendicular magnetic recording media
Issue Date
2011-04
Publisher
Journal of applied physics
Citation
VOL 109, NO 7, 07B723-1-07B723-3
Abstract
[Co(0.2 nm)/Pd(0.8 nm)]20 multilayered films on 15 nm Pd–TiN seed layers were fabricated by dc magnetron sputtering without heating the substrate. The effects of TiN content on microstructure and magnetic properties of the [Co/Pd] multilayered media were studied. By increasing the TiN content in the Pd–TiN seed layer to an optimum level, coercivity of the [Co/Pd] multilayered media increased to 6.7 kOe. However, further increase of TiN content beyond 22 vol % reduced coercivity (Hc), implying that there exists a critical TiN concentration to enhance the magnetic property of the [Co/Pd] multilayered media. Transmission electron microscopic observations revealed that well-isolated [Co/Pd] multilayered grains with apparent grain boundaries were achieved by controlling the TiN content in the Pd–TiN seed layer. The average grain diameter was 8 nm with a dispersion of 11.2%, grown on the Pd–TiN seed layer with TiN content of 22 vol %.
URI
http://pubs.kist.re.kr/handle/201004/40442
ISSN
0021-8979
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KIST Publication > Article
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