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Novel Bilayer Structures for Short Wavelength High Density Magneto-Optical Data Storage |
| WANG Xian-Ying1;WANG Jing2;WANG Zhan-Yong1;YANG Jun-He1 |
| 1Department of Materials Engineering, Shanghai Institute of Technology, Shanghai 2002352College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200235 |
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WANG Xian-Ying, WANG Jing, WANG Zhan-Yong et al 2008 Chin. Phys. Lett. 25 2242-2245 |
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Abstract We report a novel bi-layer thin film structure for high density magneto-optical (MO) data storage, which combines the advantages of blue wavelength and magnetically induced superresolution (MSR) recording. A double-layer system of exchange-coupled light rare-earth (LRE) element doped NdGdFeCo and traditional TbFeCo is used as the recording medium. The experimental results demonstrate that this NdGdFeCo/TbFeCo double layer has large Kerr rotation under blue wavelength. Centre aperture detection (CAD) MSR effect with temperature rising is also observed. Theoretical calculation is also carried out to verify the experimental results. These results collectively suggest that the new bilayer structure is very promising in next generation high density MO data storage.
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| Keywords:
75.70.-i
75.60.Ej
75.60.Ak
75.10.Nc
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Received: 03 March 2008
Published: 31 May 2008
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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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75.10.Nc
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