Complex impedance properties of LiSr2Nb5O15 ceramic

N.K. MOHANTY; S.K. SATPATHY; Banarji BEHERA; P. NAYAK; R.N.P. CHOUDHARY

doi:10.1007/s40145-012-0025-x

Journal of Advanced Ceramics 2012, 1(3): 221-226 https://doi.org/10.1007/s40145-012-0025-x

Research Article |

Open Access | Issue | Published: 11 December 2012

Complex impedance properties of LiSr₂Nb₅O₁₅ ceramic

Show Author's Information Hide Author's Information N.K. MOHANTY^{^a}, S.K. SATPATHY^{^a}, Banarji BEHERA^{^a}(

), P. NAYAK^{^a}, R.N.P. CHOUDHARY^{^b}

^a School of Physics, Materials Research Laboratory, Sambalpur University, Jyoti Vihar, Burla-768 019, Odisha, India

^b Department of Physics, ITER, S.O.A. University, Bhubaneswar-751 030, Odisha, India

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conductivity, Key words: niobates, complex impedance, modulus

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MOHANTY N, SATPATHY S, BEHERA B, et al. Complex impedance properties of LiSr₂Nb₅O₁₅ ceramic. Journal of Advanced Ceramics, 2012, 1(3): 221-226. https://doi.org/10.1007/s40145-012-0025-x

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Abstract

The polycrystalline sample of LiSr₂Nb₅O₁₅ (LSN) was prepared by a high-temperature solid state reaction technique. The impedance parameters were studied using an impedance analyzer in a wide range of frequencies (10²-10⁶ Hz) at different temperatures (28-500 ℃). Nyquist plot reveals the presence of bulk effect only. The bulk resistance of the compound decreases with rise in temperature which shows the negative temperature coefficient of resistance (NTCR) like a semiconductor. The ac conductivity spectrum was found to obey Jonscher's universal power law. DC conductivity (bulk) with temperature demonstrates that the compound exhibits Arrhenius type of electrical conductivity and the activation energy found to be 0.97 eV.

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Complex impedance properties of LiSr₂Nb₅O₁₅ ceramic

Show Author's information Hide Author's Information N.K. MOHANTY^{^a}, S.K. SATPATHY^{^a}, Banarji BEHERA^{^a}(

), P. NAYAK^{^a}, R.N.P. CHOUDHARY^{^b}

^a School of Physics, Materials Research Laboratory, Sambalpur University, Jyoti Vihar, Burla-768 019, Odisha, India

^b Department of Physics, ITER, S.O.A. University, Bhubaneswar-751 030, Odisha, India

Abstract

Keywords: conductivity, Key words: niobates, complex impedance, modulus

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Publication history

Received: 20 August 2012

Accepted: 04 October 2012

Published: 11 December 2012

Issue date: September 2012

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Acknowledgements

The authors (PN and BB) acknowledge the financial support through DRS-I under SAP of UGC for the development of research work in the School of Physics, SU.