Fabrication and surface transformation of FePt nanoparticle monolayer |
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Authors: | Ying Wang Baojun Ding Hua Li Xiaoyan Zhang Bingchu Cai Yafei Zhang |
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Institution: | 1. Bio-X DNA Computer Consortium, National Key Laboratory of Nano/Micro Fabrication Technology, Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, Research Institute of Micro/Nanometer Science and Technology, Shanghai Jiao Tong University, Shanghai, 200030, PR China;2. Chemistry Department, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Dalian 116024, Liaoning Province, PR China |
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Abstract: | The monolayer of FePt nanoparticles with the mean size of ∼4 nm was fabricated on a glass substrate by the Langmuir––Blodgett (LB) technology. The monolayer of FePt nanoparticles has a smooth surface and a high density structure as shown by the AFM image. The array structure of FePt nanoparticles on the surface of the film is clearly with a cubic symmetry in appropriate condition. Small-angle X-ray diffraction (SXRD) measurement of multilayer structure for the FePt nanoparticles has indicated that the superlattices consist of well-defined smooth layers. The transfer of nanoparticle layers onto a solid substrate surface was quite efficient for the first few layers, exhibiting a proportional increase of optical absorption in the UV–vis range. This results potentially opens up a new approach to the long-range ordered array of FePt nanoparticles capped by organic molecules on substrate and provide a promising thin film, which may exhibit the excellent ultra-high density magnetic recording properties. |
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Keywords: | Langmuir&ndash Blodgett (LB) Monolayer FePt Nanoparticles |
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