Anisotropic electrical properties of Bi0.5(Na0.75K0.25)0.5TiO3 ceramics fabricated by reactive templated grain growth (RTGG) |
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| Authors: | A. Hussain C.W. Ahn H.J. Lee I.W. Kim J.S. Lee S.J. Jeong S.K. Rout |
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| Affiliation: | aSchool of Materials Science and Engineering, University of Ulsan, Ulsan 680-749, Republic of Korea;bBusan Center, Korea Basic Science Institute, Busan 609-735, Republic of Korea;cDepartment of Physics, University of Ulsan, Ulsan 680-749, Republic of Korea;dElectric and Magnetic Devices Group, KERI, Gyungnam, Republic of Korea;eDepartment of Applied Physics, Birla Institute of Technology, Mesra Ranchi, 835 215, India |
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| Abstract: | We have fabricated lead-free Bi0.5(Na0.75K0.25)0.5TiO3 (BNKT) ceramics by a conventional process (CP) and reactive templated grain growth (RTGG) methods. The effect of grain orientation on structure, dielectric, complex impedance and electrical properties was investigated. The phase formation and grain morphology of BNKT ceramics were examined by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. High dielectric constant and low dielectric loss was observed for grain oriented (textured) BNKT ceramics. Complex impedance, temperature dependent ac and dc conductivity were performed to explore the conduction behavior of the prepared BNKT ceramics. |
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| Keywords: | Lead-free ceramics Bismuth sodium potassium titanate ceramics Reactive templated grain growth Electric conductivity Impedance |
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