AgInSbTe/Si thin films on glass substrates are prepared by dc magnetron sputtering at room temperature. Using Si underlayer as the thermal diffusion layer, the super-resolution nano-ablation holes with a size of 70hm ...AgInSbTe/Si thin films on glass substrates are prepared by dc magnetron sputtering at room temperature. Using Si underlayer as the thermal diffusion layer, the super-resolution nano-ablation holes with a size of 70hm in the AglnSbTe phase change films are obtained by a far-field focused laser experimental setup, with laser wavelength 405 nm and objective-lens numerical aperture 0.90. The nano-ablation formation mechanism is analysed and discussed via the thermal diffusion of sample structures.展开更多
We report on new experimental results for below-diffraction-limited hybrid recording. In our experiments, by means of focused laser assisted magnetic recording, the magnetic domains within TbFeCo thin films are obtain...We report on new experimental results for below-diffraction-limited hybrid recording. In our experiments, by means of focused laser assisted magnetic recording, the magnetic domains within TbFeCo thin films are obtained under an external perpendicular direct magnetic field. For a single magnetic medium, the domain size is mainly determined by the focused spot, which is about 620 nm for the laser wavelength λ=406 nm, and a numerical aperture of the lens of 0.80. However, when a silicon thin film structure is inserted between the substrate and the magnetic medium, the recording domains can be reduced obviously. By optimizing the experimental condition, even the size can be reduced to about 100 nm, which is below the diffraction limit, i.e. about 1/6 of the spot size. This is very useful for improving the hybrid recording density in practical applications.展开更多
基金The National Natural Science Foundation of China(No.61205076)the University Young Teacher Training scheme of Shanghai,Hujiang Foundation of China(No.C14002)Shanghai Natural Science Foundation of China(No.12ZR1420800)
基金Supported by the Shanghai Rising Star Programme （05QMX1476）, the National Natural Science Foundation of China under Grant Nos 50772120, 60507009 and 60490290, the Shanghai Key Basic Research Project （06DJ14007）, Chinese Academy of Sciences （KJCXZ.YW.NANO.06）, and the National Basic Research Programme of China （2007CB935400）.
文摘AgInSbTe/Si thin films on glass substrates are prepared by dc magnetron sputtering at room temperature. Using Si underlayer as the thermal diffusion layer, the super-resolution nano-ablation holes with a size of 70hm in the AglnSbTe phase change films are obtained by a far-field focused laser experimental setup, with laser wavelength 405 nm and objective-lens numerical aperture 0.90. The nano-ablation formation mechanism is analysed and discussed via the thermal diffusion of sample structures.
基金Project supported by the National Natural Science Foundation of China (Grant Nos 50772120 and 60490290)Funds of the Chinese Academy of Sciences for Key Topics in Innovation Engineering (Grant No KJCXZYW.NANO.06)the National Basic Research Program of China (Grant No 2007CB935400)
文摘We report on new experimental results for below-diffraction-limited hybrid recording. In our experiments, by means of focused laser assisted magnetic recording, the magnetic domains within TbFeCo thin films are obtained under an external perpendicular direct magnetic field. For a single magnetic medium, the domain size is mainly determined by the focused spot, which is about 620 nm for the laser wavelength λ=406 nm, and a numerical aperture of the lens of 0.80. However, when a silicon thin film structure is inserted between the substrate and the magnetic medium, the recording domains can be reduced obviously. By optimizing the experimental condition, even the size can be reduced to about 100 nm, which is below the diffraction limit, i.e. about 1/6 of the spot size. This is very useful for improving the hybrid recording density in practical applications.
