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A lead-free perovskite Bi1/2(Na1/4Li1/4)TiO3: investigation on structural, electrical properties, and device application

A lead-free perovskite Bi1/2(Na1/4Li1/4)TiO3: investigation on structural, electrical properties, and device application
Barik, Subrat KumarGogoi, Koustav KashyapSahoo, SudarsanKim, Hoe JoonHajra, Sugato
DGIST Authors
Barik, Subrat Kumar; Gogoi, Koustav Kashyap; Sahoo, Sudarsan; Kim, Hoe Joon; Hajra, Sugato
Issue Date
Journal of Materials Science: Materials in Electronics, 32(4), 4629-4638
Carrier mobilityCoal industryFossil fuelsGrain boundariesInvestmentsPerovskiteRenewable energy resourcesSolid state reactionsElectrical characterizationExperimental conditionsHigh dielectric constantsLead-free perovskitesMulti-functional materialsOrthorhombic symmetryPiezoelectric energy harvestersRenewable energy sourceActivation energy
In the present era, global challenges are focused to meet the security of energy due to excessive energy demands. The coal and petroleum-based fossil fuels are soon fading out due to current energy-generating units; hence, the energy from renewable energy sources becomes an alternative medium and new scientific investment. Research is carried out to boost the efficiency of these devices. The multifunctional materials having superior properties are the need of the hour to provide insight towards producing low-cost energy devices. A perovskite having the chemical formula Bi1/2(Na1/4Li1/4)TiO3 (BNLTO) is synthesized using a solid-state reaction. The standard techniques were used to investigate the structural and electrical characterizations at various experimental conditions. The X-ray diffraction (XRD) spectra elucidated the presence of an orthorhombic symmetry in the synthesized sample. The high dielectric constant and low loss factor is evolved at various frequencies and temperatures. The Nyquist plot depicts the association of the combined effect of grain and grain boundary. The activation energies evaluated from the loss and modulus spectrum are noted as ~ 1.26 eV and 0.81 eV, respectively. The charge carriers contribute to the conduction mechanism at high temperature. Finally, a poled piezoelectric energy harvester is fabricated to check its capabilities for the conversion of small impact from hand palm into electrical energy. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC part of Springer Nature.
Related Researcher
  • Author Kim, Hoe Joon Nano Materials and Devices Lab
  • Research Interests MEMS/NEMS; Micro/Nano Sensors; Piezoelectric Devices; Nanomaterials; Heat Transfer; Atomic Force Microscope
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Department of Robotics and Mechatronics EngineeringNano Materials and Devices Lab1. Journal Articles

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