Fabrication of homogeneous nanoparticle/nanoneedle BaTiO3 and Ba0.8Sr0.2TiO

Saini, Mamta ; Vivekanand, K. ; Poddar, Pankaj ; Murty, K. V. G. K. ; Thushara, K. S. ; Gopinath, Chinnakonda S. (2010) Fabrication of homogeneous nanoparticle/nanoneedle BaTiO3 and Ba0.8Sr0.2TiO International Journal of Nanotechnology, 7 . pp. 919-931. ISSN 1475-7435

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Official URL: http://www.inderscience.com/search/index.php?actio...

Related URL: http://dx.doi.org/10.1504/IJNT.2010.034698


Ferroelectric BaTiO3 (BTO) and Ba0.8Sr0.2TiO3 (BSTO) thin film materials have been successfully prepared by sol-gel processing and simple dip coating on glass and silicon supports. Above thin films were characterised by X-ray diffraction (XRD), Raman spectroscopy, photoelectron spectroscopy, thermal analysis, atomic force microscopy (AFM) and spectroscopic ellipsometry. Phase identification of BaTiO3 and Ba0.8Sr0.2TiO3 was performed by XRD. XRD and Raman spectroscopy investigations demonstrate that the Ba0.8Sr0.2TiO3 film exhibits tetragonal structure. AFM analysis demonstrates the elongated nanospherical particles on glass substrate and nanowires on silicon substrate, which represent a strong influence of the crystallinity of underlying substrate on the grain morphology in this technique. The thin films on both the substrates are uniformly coated without any pinhole to a significant area (~2.5 cm2), and this method might be extended to large area uniform coating. Spectroscopic ellipsometric measurements reveal the exact thickness, refractive index and extinction coefficient of the thin films.

Item Type:Article
Source:Copyright of this article belongs to Inderscience Publishers.
Keywords:Barium Titanate; Barium Strontium Titanate; Thin Films; Nanotechnology; Fabrication; Dip Coatings; Ferroelectric Materials; Large Area Coating; Thickness; Refractive Index; Extinction Coefficient; Sol-gel; Nanoparticles; Nanowires; Nanotechnology; Crystallinity; Grain Morphology
ID Code:61932
Deposited On:15 Sep 2011 12:17
Last Modified:15 Sep 2011 12:17

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