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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.17 [2010] >
IJEMS Vol.17(6) [December 2010] >
| Title: | Effect of sintering temperature on structural and electrical properties of BiFeO3 multiferroics |
| Authors: | Pandu, Ratnakar
Yadav, K L
Kumar, Amit
Reddy, P Ravinder
Gupta, A V S S K S |
| Keywords: | Ceramics
X-ray diffraction
Dielectric properties
Grain size
Multiferroic |
| Issue Date: | Dec-2010 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Polycrystalline samples of BiFeO3 are synthesized at low
temperature using sol-gel technique. From the XRD analysis it is seen that
crystallite size increases and the strain in the crystallites decreases with
increasing sintering temperature. As the crystallite size increases with
increasing temperature the lattice parameter (aR) decreases. SEM micrographs show that the samples are
homogeneous. It is also confirmed from the SEM micrographs that the grain size
increases with increasing sintering temperature. Analyzing the SEM micrographs
it can be concluded that the particle size follows the Gaussian distribution.
Ferroelectric to paraelectric transition temperature (Tc) is detected by DTA analysis, which shows that the
Curie temperature of pure BiFeO3 is 814°C which is very close to the
ideal value (827°C) found by dielectric measurement. |
| Page(s): | 481-485 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.17(6) [December 2010]
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