Structural, Phase Transition, Morphological, Optical and Dielectric Properties of Lead Free (1-x)(Na0.99K0.01)(Nb0.95Sb0.05)O3-xBaTiO3 Solid Solutions
S. Sasi Kumar1, S. Saravana Kumar2, S. Asath Bahadur3, T. K. Thirumalaisamy4
1S. Sasi Kumar, Research Centre, Department of Physics, Kalasalingam Academy of Research and Education College, Krishnankoil (Tamil Nadu), India.
2S. Saravana Kumar, Research Centre, Department of Physics, Kalasalingam Academy of Research and Education College, Krishnankoil (Tamil Nadu), India.
3S. Asath Bahadur, Research Centre, Department of Physics, Kalasalingam Academy of Research and Education College, Krishnankoil (Tamil Nadu), India.
4T. K. Thirumalaisamy, Research Centre, Department of Physics, Hajee Karutha Rowther Howdia College, Uthamapalayam (Tamil Nadu), India.
Manuscript received on 03 December 2019 | Revised Manuscript received on 21 December 2019 | Manuscript Published on 31 December 2019 | PP: 879-882 | Volume-8 Issue-4S2 December 2019 | Retrieval Number: D11671284S219/2019©BEIESP | DOI: 10.35940/ijrte.D1167.1284S219
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Abstract: In this work, lead free (1-x)(Na0.99K0.01)(Nb0.95Sb0.05)O3-xBaTiO3, where x=0.1, 0.2 ceramic solid solution systems were prepared via solid state sintering method. X-ray diffraction (XRD) reveals that the influence of Ba2+ on crystal structure of the NKNS-xBT (x=0.1, 0.2) solid solutions. PXRD analysis showed that Ba2+ addition into NKNS ceramics caused significant change in crystal symmetry from tetragonal to cubic. The surface morphology of the prepared ceramics were determined by scanning electron microscopic (SEM) measurements and revealed that the uniform distribution of grains. Energy band gap were determined by UV-visible absorption spectrophotometer. Dielectric measurements show the maximum dielectric constant (ε~3044) and temperature (Tm~120°C) at 1 kHz.
Keywords: Ceramics, Scanning Electron Microscopy, Phase Transition, Dielectric Properties, Optical Properties.
Scope of the Article: Properties and Mechanics of Concrete