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Investigation of dielectric and electrical behavior of Mn doped YCrO3 nanoparticles synthesized by the sol gel method |
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| Affiliation: | 1. Department of Physics, Asansol Engineering College, Kanyapur Asansol 713305, West Bengal, India;2. Department of Physics, National Institute of Technology, Mahatma Gandhi Avenue, Durgapur 713209, West Bengal, India;1. Hefei Teacher''s College, Hefei 230061, China;2. Research Center for Biomimetic Functional Material san Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China;3. School of Electronic and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China;1. Centre for Material Science and Engineering, National Institute of Technology, Hamirpur, Himachal Pradesh, 177005, India;2. Department of Physics, National Institute of Technology, Hamirpur, Himachal Pradesh, 177005, India;1. Department of Physics, National Institute of Technology, Durgapur, M.G. Avenue, Durgapur 713209, West Bengal, India;2. CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, West Bengal, India |
| Abstract: | In the present work Mn doped YCrO3 nanoparticles are synthesized by the sol–gel method. Samples have been characterized by the X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV–vis absorption spectroscopy. The optical band gap of Mn doped YCrO3 nanoparticles increases with increase of doping concentration. The dc resistivity of the prepared samples decreases with increasing temperature. The variation of ac conductivity with frequency has been explained by the Correlated Barrier Hoping (CBH) conduction mechanism. Dielectric permittivity of the samples was studied and it follows the power law ε/(f)∝Tn, where the temperature exponent n is found to be frequency dependent. The dielectric properties of the samples have been discussed in terms of electric modulus vector. Both activation energies due to dc resistance and dielectric response have been measured for the different samples and it is observed that it increases with the Mn content. |
| Keywords: | Chromate Nanoparticles Sol–gel process X-ray diffraction Electrical conductivity Dielectric properties |
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