PtCo/Au nanocomposite: Synthesis,characterization, and magnetic properties |
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| Institution: | 1. Department of Chemistry, Soochow University, Suzhou 215123, PR China;2. State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, PR China;1. Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, PR China;2. Laboratory for Photomolecular Science (LSPM), Swiss Federal Institute of Technology at Lausanne (EPFL), CH-1015, Lausanne, Switzerland;3. College of Materials and Chemical Engineering, Hainan University, Haikou, 570228, PR China;1. Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China;2. School of Materials Science and Engineering, Northeastern University, Shenyang 110004, China;1. Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China;2. Sinopec Research Institute of Petroleum Processing, Research Center of Renewable Energy, Beijing, 100083, China;3. Chongqing Medical and Pharmaceutical College, Chongqing, 401331, China;1. Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China;2. College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China;3. School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China;4. Department of Agricultural and Biosystems Engineering, South Dakota State University, Brookings, SD 57007, United States;5. Department of Mechanical & Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK;1. Collaborative Innovation Center of Sustainable Energy Materials, School of Physical Science and Technology, Guangxi University, Nanning, 530004, China;2. Guangxi Key Laboratory of Electrochemical Energy Materials, Nanning, 530004, China;3. Key Laboratory of New Processing Technology for Non-ferrous Metal and Materials, Ministry of Education, Nanning, 530004, China;4. School of Chemistry & Chemical Engineering, Guangxi University, Nanning, 530004, China |
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| Abstract: | Magnetic PtCo/Au nanocomposites with narrow size distribution were synthesized in a reverse micelle, followed by a post-synthesis handling of the stabilizer-exchange technique. The PtCo/Au nanocomposites were characterized by ultraviolet visible spectroscopy, X-ray diffraction and transmission electron microscopy, respectively. Superconducting quantum interference device studies revealed that the nanocomposites were superparamagnetic above the blocking temperature (TB=69 K), while the samples were ferromagnetic with Hc (628 Oe) and Ms (2.97 emu/g) at 5 K. |
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