Abstract:
In this work, BaTi03 has been synthesized via hydrothermal method using Titanium
(IV) bis (ammonium lactate) dihydroxide solution and Barium dihydroxide as the Ti
and Ba precursors, respectively as well as 3M of NaOH. The systhesis process was
undertaken in an oven at the temperature range of 230
C since low
temperature was needed compared with other wet-chemical methods. Oleic acid and
tert-butylarnine were used as the surfactants to control the morphology and the size of
the BaTi03 particles by tuning the concentration of the formers. The synthesized
powders were calcined and then characterized by X-ray Diffraction (XRD), Fourier
Transform Infrared Spectrometer (FTIR) and Scanning Electron Microscopy (SEM).
The powders were later pressed into pellets and sintered at l 300
°
C - 250
°
C. The sintered
pellets were further characterized using Electrochemical Impedance Spectroscopy
(EIS). The powder calcined at 900
°
°
C showed the formation of single phase BaTi03
nanocubes. Through the EIS characterisation, highest dielectric constant was obtained
at lkHz for the molar ratio of 1: 18: 18, which is 579.15. It is evident that hydrothermal
synthesis method is the cost effective, temperature controlled and alternative way to
synthesize single-crystalline BaTi03 in the nano-sized and cubic morphology.
