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Magnetic properties of polyaniline doped with FeCl3
Affiliation:1. Institute of Experimental Physics, Warsaw University, Ho?a 69, 00-681 Warsaw, Poland;2. Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland;3. Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland;1. Department of Physics, Institute of Applied Materials, SARChI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa;2. Laboratoire d’Energie, de Photonique et de Nano-Fabrication, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar (UCAD), B.P. 25114, Dakar-Fann Dakar, Senegal;3. Nuclear Energy Cooperation South Africa, Nuclear Liabilities Waste Management, Pelindaba, South Africa;1. Key Laboratory of Advanced Functional Materials, Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, PR China;2. Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China;3. Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, PR China;1. Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, PR China;2. Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, PR China;3. College of Materials Science and Engineering, Huaqiao University, Xiamen, Fujian, 361021, PR China;1. National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan;2. Department of Chemistry, Women University Swabi, 22102, Pakistan;3. Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan;1. Building Physics and Environment Institute, Housing& Building National Research Center (HBRC), 12311, Dokki, Cairo, Egypt;2. Scientific Department, Faculty of Engineering, Port Said University, Port Said, Egypt;3. Physics Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt;4. Spectroscopy Department, National Research Centre, El-Bohouth Str., 12622, Dokki, Giza, Egypt
Abstract:Magnetic properties of polyaniline (PANI) doped with FeCl3 were investigated as a function of temperature and magnetic field. The temperature dependence of the magnetic susceptibility (χ) of PANI doped with FeCl3 exhibits dominant paramagnetic component (well described by Curie–Weiss law with a negative Curie–Weiss temperature Θ) accompanied by a small temperature-independent paramagnetic contribution. Magnetization measured as the function of magnetic field shows smaller saturation effect than expected for non-interacting iron ions. These two observations suggest weak antiferromagnetic (AF) interactions between Fe ions.
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