| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Ferro-/Ferri-Exchange Coupled Magnetic Double Layers For High Density Magneto-optical Data Storage |
| WANG Xian-Ying, WANG Jing, YANG Jun-He |
| School of Materials Science and Technology, Shanghai University for Science and Technology, Shanghai 200093 |
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| Cite this article: |
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WANG Xian-Ying, WANG Jing, YANG Jun-He 2009 Chin. Phys. Lett. 26 107502 |
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Abstract PtCo/TbFeCo ferro-/ferri-exchange coupled double layer film (ECDL) was fabricated for high density magneto-optical (MO) data storage. At room temperature (RT), the PtCo film is in-plane magnetized and acts as a mask layer. However, at elevated temperature, it turns to be out-of-plane magnetized because of the strong exchange coupling interactions with the TbFeCo layer. Therefore, this ECDL film has a magnetically induced superresolution (MSR) effect. Combining it with the good Kerr signal at short wavelength, the PtCo/TbFeCo film can be a good candidate for blue laser-MSR MO data storage.
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| Keywords:
75.70.-i
75.60.Ej
75.60.Ak
75.15.Nc
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Received: 20 July 2009
Published: 27 September 2009
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| PACS: |
75.70.-i
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(Magnetic properties of thin films, surfaces, and interfaces)
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75.60.Ej
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(Magnetization curves, hysteresis, Barkhausen and related effects)
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75.60.Ak
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75.15.Nc
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