Authors:
P. Elaiyaraja, Narasimha Rao Boinapalli

Addresses:
1Department of Physics, SRM Institute of Science and Technology, Ramapuram, Chennai, Tamil Nadu, India. 2Department of Data and Analytics (D&A), Weisiger Group, Charlotte, North Carolina, United States of America. elaiyarajaphysics@gmail.com1, nara.boinapalli@gmail.com2

Abstract:

The new ceramic composites are 0.98 (NaNbO3)-0.02 Bi0.45Gd0.05K0.5Zr0.7Ti0.3O3 and 0.85 (NaNbO3)-0.15 Bi0.45Y0.04K0.5Zr0.7Ti0.3O3. Lead-free and polycrystalline were created using the traditional solid-state technique and have been widely researched for their various applications. Their manufacturing was accomplished through the use of a two-step sintering method. A perovskite structure with a Pmc21 space group was discovered to be present in the material when it was subjected to analysis. This was accomplished by utilising Schecher's formula and Williamson-Hall plots derived from XRD spectra in order to determine the particle size and strain. According to the results of the Raman spectroscopy, the vibrational spectral lines have shifted to a lower frequency, with the frequency range falling between 100 and 800 cm-1. Furthermore, the grain morphology was clearly characterised and varied in the FE-SEM pictures which were obtained. Band structure values were observed in the UV-Vis spectrum, and they ranged from 3.2 eV to 2.8 eV. There were emission bands in the green (522 nm), yellow (575 nm), and red (693 nm) ranges that were observed in the photoluminescence spectrum. The data from the dielectric material demonstrated a decrease in symmetry at temperatures ranging from 10 kHz to 1 MHz. In addition, the ferroelectric and piezoelectric coefficients were improved as a result of increasing doping, with d33 values of 150 (pc/N) and 255 (pc/N) respectively. 

Keywords: UV Spectrometers; Raman Spectroscopy; Dielectric Constant; Analysis of the Emission Spectrum; Ferroelectric and Piezoelectric; Field Emission Scanning Electron Microscope (FE-SEM); Two-Step Sintering.

Received on: 03/11/2023, Revised on: 26/12/2023, Accepted on: 14/02/2024, Published on: 03/06/2024

DOI: 10.69888/FTSASS.2024.000163

FMDB Transactions on Sustainable Applied Sciences, 2024 Vol. 1 No. 1, Pages: 10-20

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