Microstructure and magnetic properties of FePt-(C,SiO2) granular films deposited on MgO, MgTiO, and MgTiON underlayers
| Autor: | Paul C. Dorsey, Antony Ajan, Hua Yuan, Miho Nagano, Hossein Sepehri-Amin, S. Pirzada, Hoan Ho, Tomoko Seki, Kumar Srinivasan, Kazuhiro Hono, D. Tripathy |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Metals and Alloys Perpendicular recording 02 engineering and technology Coercivity 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Grain size Heat-assisted magnetic recording Mechanics of Materials Atomic resolution 0103 physical sciences General Materials Science Composite material 0210 nano-technology Electrical conductor |
| Zdroj: | Scripta Materialia. 157:1-5 |
| ISSN: | 1359-6462 |
| Popis: | We investigated the microstructure and magnetic properties of FePt-(C,SiO2) granular films deposited on MgO, MgTiO, and MgTiON underlayers. The coercivity and grain size of the FePt-(C,SiO2) film are substantially degraded when deposited on the MgTiO underlayer compared to those on the MgO underlayer, while they become comparable when deposited on the MgTiON underlayer. Atomic resolution STEM-EDS showed Ti in the MgTiO underlayer diffuses into FePt grains, while it is suppressed using the MgTiON underlayer. This suggests that MgTiON is a good choice for a conductive underlayer for growing L10-FePt perpendicular recording media for heat assisted magnetic recording. |
| Databáze: | OpenAIRE |
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