Kaur, Jaspreet and Kotnala, R. K. and Verma, Kuldeep Chand (2012) Surfactant free hydrothermal synthesis, electrical, optical and ferroelectric properties of BaTiO3 nanoparticles. Journal of Optoelectronics and Advanced Materials , 14 ( 3-4 ). 219-223. ISSN 1454-4164

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Abstract

Structural, microstructural, Raman spectroscopy, Photoluminescence, fourier transform infrared (FTIR) spectroscopy, dielectric, ac conductivity and ferroelectric properties of BaTiO3 (BT) nanoparticles were studied. BT nanoparticles were synthesized by a surfactant free hydrothermal method of processing temperature 200 degrees C/72h. The crystalline structure was investigated by X-ray diffraction and Raman spectroscopy show the tetragonal phase of BT. The average particle size and morphology were examined by transmission/scanning electron microscopy. Photoluminescence shows the green emission result in recombination of a photo generated hole with a singly ionized charged state. FTIR measurement shows the existence of Ba-Ti-O bond. Frequency dependent dielectric properties, i.e., relative dielectric permittivity and dielectric loss were studied in the frequency range 1 kHz - 10 MHz. The dielectric behavior is explained by the interface polarization, decreasing trend of the dielectric permittivity with increasing frequency by the Koops model, dispersion by Maxwell-Wagner type and is constant up to higher frequency region due to nano size effect. The ac conductivity with varying frequency at room temperature increases with increasing frequency. Polarization dependent electric field measurement is used to represent ferroelectric behavior of BT nanoparticles.

Item Type:	Article
Additional Information:	copyright for this article belongs to M/s INOE Publishing House
Subjects:	Materials Science Applied Physics/Condensed Matter Optics
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	19 Aug 2026 10:55
Last Modified:	19 Aug 2026 10:55
URI:	https://npl.csircentral.net/id/eprint/3385

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