Influence of Fe doping on the structural,optical and magnetic properties of ZnS diluted magnetic semiconductor |
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| Institution: | 1. Universidade Federal de Alfenas, 37130-000, Alfenas, MG, Brazil;2. Centro de Desenvolvimento da Tecnologia Nuclear, CDTN, 31270-901, Belo Horizonte, MG, Brazil;3. Departamento de Física, Universidade Federal de Lavras, 37200-000, Lavras, MG, Brazil;4. Instituto de Física de São Carlos, USP – Universidade de São Paulo, 13560-970, São Carlos, SP, Brazil;1. Institute of Nanomaterials and Nanotechnology, MAScIR, Rabat, Morocco;2. LMPHE, associé au CNRST (URAC 12), Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco;3. Institut Néel, CNRS-UJF, B.P. 166, 38042 Grenoble Cedex, France;1. DAV Institute of Engineering & Technology, Jalandhar, Punjab 144008, India;2. Department of Computer Science, DAV University, Jalandhar, Punjab, India;3. Department of Applied Sciences, Punjab Technical University, Jalandhar, Punjab 144601, India;1. Laboratory for Microstructures/School of Materials Science and Engineering, Shanghai University, 149 Yanchang Road, 200072 Shanghai, PR China;2. Centre for Clean Environment and Energy and Griffith School of Environment, Griffith University, Gold Coast Campus, QLD 4222, Australia |
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| Abstract: | Fe doped ZnS nanoparticles with different concentrations of Fe, synthesized by microwave assisted co-precipitation method have been reported. The incorporation of Fe2+ and Fe3+ ions into ZnS lattice are confirmed by X-ray diffraction (XRD) and Electron Paramagnetic resonance (EPR) study. XRD and High Resolution Transmission electron Microscope (HRTEM) results confirm the phase purity of the samples and indicate a reduction of the particle size with increase in Fe concentration. EDAX analysis confirms the presence of Zn, S and Fe in the samples. A yellow–orange emission peak is observed in Photoluminescence (PL) spectra which exhibits the Characteristic 4T2 (4G)–6A1 (6S) transition of Fe3+ ion. The room temperature magnetic studies as analyzed from M–H curves were investigated from vibrating samples magnetometer (VSM) which shows a weak ferro and superparamagnetic like behavior in 1% and 3% Fe-doped ZnS nanocrystals, whereas; at 10% Fe-doping concentrations, antiferromagnetism behavior is achieved. The ZFC-FC measurement reveals that the blocking temperature of the nanoparticle is above the room temperature. |
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| Keywords: | ZnS nanoparticles Luminescence Diluted magnetic semiconductor X-ray diffraction |
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