Study of electrical and dielectric properties of Sr3CoSb2O9 perovskite by impedance spectroscopy

Applied Physics A Solids and Surfaces - Tập 127 - Trang 1-12 - 2021
Syeda Arooj Fatima1, R. Shaheen1, K. Shahzad1
1Central Diagnostic Laboratory, Physics Division, PINSTECH, Islamabad, Pakistan

Tóm tắt

Triple perovskite Sr3CoSb2O9 was found to be orthorhombic having space group Immm from the Rietveld refinement of X-ray diffraction data. Impedance analysis of Sr3CoSb2O9 was performed to study the presence of different electro-active regions, electrical transport mechanism and origin of colossal dielectric constant in the temperature and frequency range of 273–423 K and 40 Hz–3 MHz, respectively. An equivalent circuit model (RgCg)(RgbQgb)(ReQe) was used to explain the complex impedance plane plots. The Rg and Rgb derived from Z View fitting of the impedance (Z) data reflect semiconducting behavior of Sr3CoSb2O9. Reduction in Z′ was observed as a function of temperature and frequency which indicates increase in ac conductivity and negative temperature coefficient of resistance. In order to explain the electrical conduction mechanisms in grains and grain boundaries the variable range hopping model was employed. AC conductivity as a function of frequency follows Jonscher’s power law. The ac conduction mechanism was explained from temperature dependent variation of frequency exponents n1 and n2. The modulus analysis confirmed the presence of non-Debye type multiple relaxation mechanisms. Dielectric properties of the sample were also investigated in the temperature range 273–423 K. At higher frequencies reduction in dielectric loss was observed.

Tài liệu tham khảo

W. González, R. Cardona, D.A.L. Téllez, J. Roa-Rojas, Crystallographic and electronic structure of the Sr3Sb2CoO9 triple perovskite. J. Phys. Conf. Ser. IOP Publ. 480, 012022 (2014) H. Wei, Y. Chen, G. Huo, H. Zhang, J. Ma, Crystal structure, infrared spectroscopic characterization and electrical property of double perovskite Sr2CoSbO6. Physica B Condens. Matter 405, 1369–1373 (2010) V. Primo-Martin, M. Jansen, Synthesis, structure, and physical properties of cobalt perovskites: Sr3CoSb2O9 and Sr2CoSbO6−δ. J. Solid State Chem. 157, 76–85 (2001) F.M. Casallas, E. Vera-Lópeza, D.A.L. Téllez, D.E.S. Mesa, J. Roa-Rojas, Magnetic feature, compositional and structural analysis of the La2SrFe2CoO9 complex perovskite. J. Phys. Conf. Ser. IOP Publ. 480, 012034 (2014) Md.M. Hoque, A. Dutta, S. Kumar, T.P. Sinha, Structural and dielectric properties of Sr3(MgTa2)O9 and Sr3(ZnTa2)O9. Physica B 468, 85–95 (2015) V. Ting, Y. Liu, R.L. Withers, L. Norén, An electron diffraction and bond valence sum study of the space group symmetries and structures of the photocatalytic 1: 2 B site ordered A3CoNb2O9 perovskites (A= Ca2+, Sr2+, Ba2+). J. Solid State Chem. 177, 2295–2304 (2004) V. Ting, Y. Liu, L. Norén, R.L. Withers, D.J. Goossens, M. James, C. Ferraris, A structure, conductivity and dielectric properties investigation of A3CoNb2O9 (A= Ca2+, Sr2+, Ba2+) triple perovskites. J. Solid State Chem. 177, 4428–4442 (2004) J. Yin, Z. Zou, J. Ye, A novel series of the new visible-light-driven photocatalysts MCo1/3Nb2/3O3 (M= Ca, Sr, and Ba) with special electronic structures. J. Phys. Chem. B 107, 4936–4941 (2003) G. Blasse, New compounds with perovskite-like structures. J. Inorg. Nucl. Chem. 27, 993–1003 (1965) Y. Pu, Z. Dong, P. Zhang, Y. Wu, J. Zhao, Y. Luo, Dielectric, complex impedance and electrical conductivity studies of the multiferroic Sr2FeSi2O7-crystallized glass-ceramics. J. Alloys Compd. 672, 64–71 (2016) S.T. Dadami, S. Matteppanavar, I. Shivaraja, S. Rayaprol, S.K. Deshpande, M.V. Murugendrappa, B. Angadi, Impedance spectroscopy studies on PbFe0.5Nb0.5O3–BiFeO3 multiferroic solid solution. Ceram. Int. 43, 16684–16692 (2017) M.B. Hossen, A.K.M. Akther Hossain, Complex impedance and electric modulus studies of magnetic ceramic Ni0.27Cu0.10Zn0.63Fe2O4. J. Adv. Ceram. 4, 217–225 (2015) B.B. Mohanty, P.S. Sahoo, M.P.K. Sahoo, R.N.P. Choudhary, Impedance spectroscopy of Ba5GdTi3V7O30. J. Mod. Phys. 3, 357–361 (2012) R. Pattanayak, S. Panigrahi, T. Dash, R. Muduli, D. Behera, Electric transport properties study of bulk BaFe12O19 by complex impedance spectroscopy. Physica B Condens. Matter 474, 57–63 (2015) M. Younas, L.L. Zou, M. Nadeem, S.CSu. Naeem-ur-Rehman, Z.L. Wang, W. Anwand, A. Wagner, J.H. Hao, C.W. Leung, R. Lortz, F.C.C. Ling, Impedance analysis of secondary phases in a Co-implanted ZnO single crystal. Phys. Chem. Chem. Phys. 16, 16030–16038 (2014) B.P. Das, P.K. Mahapatra, R.N.P. Choudhary, Impedance spectroscopy analysis of (Pb0.93Gd0.07)(Sn0.45Ti0.55)0.9825O3 ferroelectrics. Ind. J. Eng. Mater. Sci. 15, 152–156 (2008) I. Ahmad, M.J. Akhtar, M.M. Hasan, Impedance spectroscopic investigation of electro active regions, conduction mechanism and origin of colossal dielectric constant in Nd1−xSrxFeO3 (0.1≤ x≤ 0.5). Mater. Res. Bull. 60, 474–484 (2014) K.L. Routray, D. Behera, Structural and dielectric properties of Bismuth doped cobalt nano ferrites prepared by sol-gel auto combustion method. IOP Conf. Ser: Mater. Sci. Eng. 178, 012007 (2017) A.K. Roy, K. Prasad, A. Prasad, Piezoelectric, impedance, electric modulus and AC conductivity studies on (Bi0.5Na0.5)0.95Ba0.05TiO3 ceramic. Process. Appl. Ceram. 7, 81–91 (2013) I. Ahmad, M.J. Akhtar, M. Younas, M. Siddique, M.M. Hasan, Small polaronic hole hopping mechanism and Maxwell-Wagner relaxation in NdFeO3. J. Appl. Phys. 112, 074105 (2012) B. Ghosh, A. Dutta, K. Brajesh, T.P. Sinha, Dielectric relaxation in double-perovskite Ca2GdTaO6. Indian J. Pure Appl. Phys. 53, 125–133 (2015) M. Idrees, M. Nadeem, M. Atif, M. Siddique, M. Mehmood, M.M. Hassan, Origin of colossal dielectric response in LaFeO3. Acta Mater. 59, 1338–1345 (2011) I. Ahmad, M.J. Akhtar, M. Younas, Effects of temperature on conduction mechanism, ac electrical and dielectric properties of NdFe0.9Ni0.1O3 by employing impedance spectroscopy. J. Solid State Electr. 21, 3093–3101 (2017) S.K. Hasanain, M. Nadeem, W.H. Shah, M.J. Akhtar, M.M. Hasan, Effects of iron doping on the transport and magnetic behavior in La0.65Ca0.35Mn1-yFeyO3. J. Phys. Condens. Matter 12, 9007 (2000) V. Thakur, A. Singh, A.W. Awasthi, L. Singh, Temperature dependent electrical transport characteristics of BaTiO3 modified lithium borate glasses. AIP Adv. 5, 087110 (2015) S. Thakur, R. Rai, I. Bdikin, M.A. Valente, Impedance and modulus spectroscopy characterization of Tb modified Bi0.8A0.1Pb0.1Fe0.9Ti0.1O3 ceramics. Mat. Res. 19, 1–8 (2016) A.S. Alaeddin, P. Poopalan, Impedance/modulus analysis of sol-gel BaxSr1−xTiO3 thin films. J. Korean Phys. Soc. 57, 1449–1455 (2010) P. Kumar, A.K. Sharma, B.P. Singh, T.P. Sinha, N.K. Singh, Dielectric relaxation in complex perovskite oxide Sr(Gd0.5Nb0.5)O3. Mater. Sci. Appl. 3, 369–376 (2012) U. Ahmadu, S. Tomas, S.A. Jonah, A.O. Musa, N. Rabiu, Equivalent circuit models and analysis of impedance spectra of solid electrolyte Na0.25Li0.75Zr2(PO4)3. Adv. Mater. Lett. 4, 185–195 (2013) A.K. Pradhan, P.R. Mandal, K. Bera, S. Saha, T.K. Nath, The effect of Mo doping on the structural and dielectric properties of Co–Zn ferrite. Physica B Condens. Matter 525, 1–6 (2017) J. Bashir, R. Shaheen, Structural and complex AC impedance spectroscopic studies of A2CoNbO6 (A= Sr, Ba) ordered double perovskites. Solid State Sci. 13, 993–999 (2011) A.K. Pradhan, S. Saha, T.K. Nath, AC and DC electrical conductivity, dielectric and magnetic properties of Co0.65Zn0.35Fe2−xMoxO4 (x= 0.0, 0.1 and 0.2) ferrites. Appl. Phys. A 123, 715 (2017) A. Dhahri, E. Dhahri, E.K. Hlil, Electrical conductivity and dielectric behavior of nanocrystalline La0.6Gd0.1Sr0.3Mn0.75Si0.25O3. RSC Adv. 8, 9103–9111 (2018) L. Biswal, P.R. Das, B. Behera, Frequency dependent electrical properties of Na2Pb2R2W2Ti4Nb4O30 (R= Nd, Sm) ceramics. J. Adv. Ceram. 3, 215–223 (2014) A. Singh, B. Deka, S. Ravi, D. Pamu, Impedance spectroscopy and ac conductivity mechanism in Sm doped Yttrium Iron Garnet. Ceram. Int. 43, 10468–10477 (2017) A. Oueslati, Li+ ion conductivity and transport properties of LiYP2O7 compound. Ionics 23, 857–867 (2017) T.S. Velayutham, W.H. Abd Majid, W.C. Gan, A. Khorsand Zak, S.N. Gan, Theoretical and experimental approach on dielectric properties of ZnO nanoparticles and polyurethane/ZnO nanocomposites. J. Appl. Phys. 112, 054106 (2012) N. Mehta, D. Kumar, S. Kumar, A. Kumar, Applicability of CBH model in the ac conduction study of glassy Se100-xInx alloys. J. Optoelectron. Adv. Mat. 7, 2971 (2005)