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Optimization of dielectric phenomenon in 0.8[(1-x)SrCoO2.29 + xCr2FeO4] + 0.2PZT tri-phase composites
Affiliation:1. Centre of Excellence in Solid State Physics, University of the Punjab, Lahore, Pakistan;2. Department of Physics, Division of Science and Technology, University of Education, Lahore, Punjab, 54770, Pakistan;3. School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China;4. Centre for Advanced Studies in Physics, Government College University, Lahore, Pakistan;5. Department of Physics, College of Science, King Saud University, Riyadh, Saudi Arabia;1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China;2. State Grid Smart Grid Research Institute Co. Ltd., Beijing, 102211, China;3. Sinoma Jiangxi Electric Porcelain Electrical Co., Ltd., Pingxiang, 337000, China;1. Instituto de Física, Benemérita Universidad Autónoma de Puebla, Edificio IF-1, Ciudad Universitaria, Puebla, Pue, 72570, Mexico;2. CONACYT-Instituto de Física Luis Rivera Terrazas, Benemérita Universidad Autónoma de Puebla, Edificio IF-1, Ciudad Universitaria, Puebla, Pue, 72570, Mexico;3. Departamento de Física, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, D.F., C.P. 11801, Mexico;4. Grupo de Materiales Ferroicos de la Facultad de Física - Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, San Lázaro y L, 10400, Habana, Cuba;1. School of Rare Earths, University of Science and Technology of China, Hefei, Anhui, 230026, China;2. Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi, 341119, China;3. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China;4. Ningbo Institute of Materials Technology & Engineering, Chineses Academy of Sciences, Ningbo, Zhejiang, 315201, China;5. Innovation Center for Applied Magnetics of Zhejiang Province, Ningbo, Zhejiang, 315201, China;1. Department of Energy and Power Engineering, Henan University of Science and Technology, Luoyang, 471003, PR China;2. Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum, Beijing, 102249, PR China;1. Mechanical Production Department, Beni-Suef University, Beni-Suef, P.O. Box 62521, Egypt;2. Manufacturing Engineering and Production Technology Department, Modern Academy for Engineering and Technology, Cairo, P.O. Box 11571, Egypt;3. Mechanical and Aerospace Engineering Department, Institute of Aviation Engineering and Technology, 12815, Giza, Egypt
Abstract:Composite materials are emerging and have potential to revolutionize the modern technology. In this work, a series of tri-phase composite materials having the chemical formula; 0.8[(1-x) SrCoO2.29+xCr2FeO4] + 0.2PZT, is synthesized to explore their energy storage capability. In this series, SrCoO2.29 and Cr2FeO4 ceramics are synthesized by using a sol-gel auto-combustion process while PZT is prepared by the solid-state method. The XRD analysis confirmed the formation of cubic crystal structure of the SrCoO2.29 and Cr2FeO4 and the rhombohedral phase of PZT. The SEM images exhibited an increase in average grain size with the incorporation and increasing contents of Cr2FeO4. The presence of all constituting elements with the exact stoichiometric ratio is validated through EDX analysis. Wide-range frequency-dependent dielectric behavior showed a dramatic fall in dielectric constant with increasing frequency. A same frequency dependent behaviour of ε'' and tanδ is witnessed as that of ε'. The investigation of electric modulus reveals that in the low-frequency region it possesses a trivial value which became significantly large with the increase of frequency. The presence of a relaxation peak in the plot of the imaginary part of the electric modulus plays a decisive role to distinguish the small and large range hopping mechanism. The complex impedance analysis revealed different electroactivity of composite material in the different frequency domains which made them viable for advanced energy storage devices working in the vast frequency range.
Keywords:Tri-phase composites  Dielectric properties  Impedance spectroscopy  Energy storage  Spinel ferrites  Composite materials
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