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Electrical and ferroelectric characteristics of (LaLi)1/2(Fe2/3Mo1/3)O3

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Abstract

Using high-temperature solid state reaction technique a new polycrystalline multiferroic material of (LaLi)1/2(Fe2/3Mo1/3)O3 has been prepared. Thermo-gravimetric analysis is carried out to optimize the calcination temperature of the material. The formation of the desired compound is confirmed by preliminary X-ray diffraction analysis. The complex impedance spectroscopy technique is used to study the dielectric properties and other electrical parameters (loss tangent, impedance, modulus, conductivity) of the material as a function of frequency (1 kHz–1 MHz) at different temperatures (RT−425 °C). The nature of Nyquist plot confirmed the presence of bulk and grain boundary effect in the compound. The relaxation time obtained from the maximum frequencies corresponding to the imaginary impedance and electric modulus plots at different temperatures are found to obey Arrhenius law. The temperature and frequency dependence of ac conductivity plot obeys Jonscher’s universal power law. The P–E loop confirms the ferroelectric behavior of the compound at room temperature.

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Acknowledgment

We are thankful to AICTE for sanctioning the project [No.: 8023/RID/RPS-32/(POLICY-III)(NER)/2011-12] for experimental work.

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Authors and Affiliations

  1. Department of Physics, National Institute of Technology, Silchar, 788010, India

    Susmita Nath & Subrat Kumar Barik

  2. Department of Physics, ITER, SOA University, Bhubaneswar, 751030, India

    R. N. P. Choudhary

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  1. Susmita Nath
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  2. Subrat Kumar Barik
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  3. R. N. P. Choudhary
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Correspondence to Subrat Kumar Barik.

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Nath, S., Barik, S.K. & Choudhary, R.N.P. Electrical and ferroelectric characteristics of (LaLi)1/2(Fe2/3Mo1/3)O3 . J Mater Sci: Mater Electron 27, 8717–8724 (2016). https://doi.org/10.1007/s10854-016-4894-6

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