Open AccessTin Doped Barium Titanate (BaTiO3) Synthesized through Molten Salt Method as Promising Dielectric Material
Author(s) -
Richa Tomar,
Karan Surana,
Pankaj Gupta,
N.B. Singh
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.23282
Subject(s) - dielectric , barium titanate , tin , doping , dielectric spectroscopy , materials science , molten salt , barium , analytical chemistry (journal) , crystallite , powder diffraction , eutectic system , dielectric loss , titanate , mineralogy , chemistry , ceramic , crystallography , metallurgy , microstructure , electrochemistry , optoelectronics , organic chemistry , electrode
Tin doped barium titanate (BaTiO3) was prepared through NaCl-KCl eutectic melt at 800 ºC. Thesynthesized materials were well characterized using powder-X-ray diffraction (PXRD) andFESEM-EDX spectroscopy. Cubic structure was observed in the PXRD pattern of tin doped sample.The crystallite size of tin doped barium titanate nanoparticles was found to be around 17 nm. Nanorodsand aggregated nanocubes like structure were observed in the FESEM images and elemental ratio ofdoped ions was confirmed by energy dispersive X-ray spectrum (EDX). Electrical properties observedfor the synthesized material were found better than those reported in the literature prepared by othermethods. The dielectric constant and dielectric loss were measured in the temperature range of 100-400K and the frequencies varying from 10 kHz to 10,000 kHz. The tin doped barium titanate showed rodtype morphology with an unprecedented high dielectric constant of ~17,500 at 10 Hz. Dielectricconstant values decreased with increasing frequency. The change in dielectric constant with frequencywas well explained by Maxwell-Wanger polarization effect. The impedance and ionic transferencenumber (tion) were also measured.