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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.50 [2012] >
IJPAP Vol.50(05) [May 2012] >
| Title: | Synthesis and analysis of LiNbO3 ceramic powders by co-precipitation method |
| Authors: | Prakash, B Jaya
Buddhudu, S |
| Keywords: | LiNbO3 ceramic powders
Co-precipitation method
Analysis |
| Issue Date: | May-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The present paper
reports on the preparation and analysis of LiNbO3 (LN) ceramic
powder by a conventional chemical co-precipitation method. An aqueous mixture
of ammonium carbonate along with ammonium hydroxide has been used. Lithium
niobate ceramic powders have been sintered at 600, 700, 800, 900 and 1000°C, respectively. Structural analysis of this material has been
carried out upon the measurement of XRD, SEM, EDAX Raman and FTIR spectral
profiles systematically. Thermal, magnetic, dielectric (e¢ and e²') ac conductivity (sac) studies have also been
investigated. XRD features of LiNbO3 ceramic powder reveal a
hexagonal crystal structure (at an optimized temperature of 800°C) based on JCPDS card No: 20-631 and an average crystallite size of
this powder has been calculated using the Scherrer’s formula. The morphology of
the LiNbO3 ceramic powder has been studied and the particles are in
nano sizes from the HRSEM image. Thermal properties of the as synthesized
chemicals mix of the sample have been investigated from the measurement of its
TG-DTA features. The dielectric properties of the LiNbO3 have been
studied and also its ferromagnetic behaviour has been verified. |
| Page(s): | 320-324 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.50(05) [May 2012]
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