Microstructure and Magnetic Properties of the CoPtRu-SiO₂ Single and CoPtRu-SiO₂/Co₇₂Pt₂₈-SiO₂ Double Layer Nanocomposite Films

Abstract:

In this work, the CoPtRu nanocomposite films with were fabricated on the Ru seed layer. The effects of Ru content on the microstructure and magnetic properties of the CoPtRu-SiO₂ single layer nanocomposite films, and magnetic properties of the CoPtRu-SiO₂/Co₇₂Pt₂₈-SiO₂ double layer nanocomposite films were studied. Results showed that with an increase of Ru content in the CoPtRu film, the ordering degree of hcp-CoPtRu decreased, the volume of soft magnetic fcc phase increased, both the anisotropy constant and the saturation magnetization of the CoPtRu film decreased greatly. As a result, the anisotropy field of the film did not decrease notably. Therefore, the coercivity of the CoPtRu-SiO₂/Co₇₂Pt₂₈-SiO₂ double layer film was very close to that of Co₇₂Pt₂₈-SiO₂ single layer film at both room temperature and low temperature.

• Periodical: Materials Science Forum (Volume 688)
• Pages: 358-363
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.688.358
• Online since: June 2011
• Authors: Ru Jun Tang, Wan Li Zhang, Yan Rong Li
• Keywords: CoPtRu, Film, Magnetic Property, Microstructure, Nanocomposite

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