Heterometallic fullerides of Fe and Cu groups with the composition K2MC60 (M=Fe+2, Fe+3, Co+2, Ni+2, Cu+1, Cu+2, Ag+1) |
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| Institution: | 1. Department of Chemistry, University of Moscow State, GSP-2, Moscow 119992, Russia;2. Department of Low Temperature Physics, Faculty of Physics, Moscow State University, GSP-2, Moscow 119992, Russia;3. Abteilung Silizium-Photovoltaik, Hahn-Meitner-Institute, D-12489 Berlin, Germany;1. Department of Physics, University of Science and Technology Beijing, Beijing 100083, China;2. Key Laboratory of Advanced Materials of Ministry of Education of China, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;1. Department of Physics, Hebei Advanced Thin Films Laboratory, Hebei Normal University, Shijiazhuang 050024, China;2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;1. Università degli Studi di Genova, Dipartimento di Chimica e Chimica Industriale, via Dodecaneso 31, 16146 Genova, Italy;2. Adam Mickiewicz University, Faculty of Chemistry, ul. Umultowska 89 b, 61-614 Poznań, Poland;1. School of Science, Shenyang University of Technology, Shenyang 110870, China;2. School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China;1. Institute of Solid State Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia;2. Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, 142432 Chernogolovka, Russia;3. Physics Department, City College of City University of New York, NY 10031, USA |
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| Abstract: | Heterometallic fullerides with composition K2MC60, synthesized by exchange chemical reaction of K5C60 or K4C60 with chlorides of metals Fe and Cu groups have been investigated by X-ray diffraction, magnetic resonance, Raman and Mössbauer spectroscopy. Magnetization and susceptibility measurements have also been carried out. Metal chlorides from Fe and Cu groups enable to cover the whole range of electronic configuration of metal from d5 to d10. Heterometallic fullerides with M=Cu+2, Fe+2, Fe+3 and Ni+2 appeared to be superconductors with Tc=13.9–16.5 K. Ferromagnetism and superconductivity coexist in investigated fulleride K2Fe+3C60. |
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