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Impedance and electric modulus analysis of Sm-modified Pb(Zr0.55Ti0.45)1−x/4O3 ceramics |
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| Authors: | Rajiv RanjanRajiv Kumar Nawnit KumarBanarji Behera RNP Choudhary |
| Affiliation: | a Department of Physics, J. Co-operative College, Kolhan University, Jharkhand 831036, India b Department of Physics, J. Worker''s College, Kolhan University, Jharkhand 831012, India c Department of Physics and Meteorology, IIT Kharagpur, West Bengal 721302, India d School of Physics, Sambalpur University, Jyoti Vihar, Bula 768019, Orissa, India e Department of Physics, ITER, S.O.A. University, Bhubaneswar 751 013, Orissa, India |
| Abstract: | The polycrystalline ceramic samples of Pb1−xSmx(Zr0.55Ti0.45)1−x/4O3 (x = 0.00, 0.03, 0.06 and 0.09) were prepared by solid-state reaction technique at high temperature. Electric impedance (Z) and modulus (M) properties of the materials have been investigated within a wide range of temperature and frequency using complex impedance spectroscopy (CIS) technique. The complex impedance analysis has suggested the presence of mostly bulk resistive (grain) contributions in the materials. This bulk resistance is found to decrease with the increase in temperature. It indicates that the PSZT compounds exhibit a typical negative temperature coefficient of resistance (NTCR) behavior. The bulk contribution also exhibits an increasing trend with the increase in Sm3+ substitution to PZT. The complex modulus plots have confirmed the presence of grain (bulk) as well as grain boundary contributions in the materials. Both the complex impedance and modulus studies have suggested the presence of non-Debye type of relaxation in the materials. |
| Keywords: | Ceramics Sintering Solid-state reaction Complex impedance spectroscopy (CIS) |
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