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Synthesis and characterization of nanocrystalline barium strontium titanate powder by a modified sol-gel processing Cover

Synthesis and characterization of nanocrystalline barium strontium titanate powder by a modified sol-gel processing

Materials Science-Poland
Volume 34 (2016): Issue 1 (March 2016)
By:
Open Access
|Apr 2016

Figures & Tables

Fig. 1

Schematic detailing the synthesis of nanocrystalline BST powder.
Schematic detailing the synthesis of nanocrystalline BST powder.

Fig. 2

FT-IR spectra of the xerogel.
FT-IR spectra of the xerogel.

Fig. 3

FT-IR spectra of BST powder calcined at 750 and 850 °C.
FT-IR spectra of BST powder calcined at 750 and 850 °C.

Fig. 4

XRD patterns of the BST powders synthesized at 600, 750, 850 °C. The peaks associated with the barium carbonate secondary phases are marked with asterisks.
XRD patterns of the BST powders synthesized at 600, 750, 850 °C. The peaks associated with the barium carbonate secondary phases are marked with asterisks.

Fig. 5

The FESEM micrograph of BST (a) calcined at 750 °C for 2 h and (b) calcined at 850 °C for 4 h.
The FESEM micrograph of BST (a) calcined at 750 °C for 2 h and (b) calcined at 850 °C for 4 h.

Fig. 6

The EDS pattern of the Ba0.6Sr0.4TiO3 powder synthesized at 750 °C.
The EDS pattern of the Ba0.6Sr0.4TiO3 powder synthesized at 750 °C.

The Crystallographic parameters used for the XRD pattern fitting for BST60/40 ceramics (PDF Card No_ 00-034-0411)_

Crystal systemCubicAngles (α, β, γ)90.00°, 90.00°, 90.00°
Space group number221Calculated density5.68
Space groupPm-3mVolume of cell62.33
Lattice parameter s3.965 Å, 3.965 Å, 3.965 Å

Details of the calculated X-ray spectrum for BST powder calcined at 750 °C_

h k l2θ [deg]dhkl [Å]FWHM [deg]Crystal size [nm]Lattice parameter [Å]
1 0 022.2653.98930.199340.61
1 1 031.8272.80920.242334.08
1 1 139.3682.28670.270931.13
2 0 045.7241.98260.314527.40
Average33.31
3 1 075.8971.25253.959
3 1 180.0351.19793.971
2 2 284.6081.14443.963
Average3.965

Details of the calculated X-ray spectrum for BST powder calcined at 850 °C_

h k l2 [deg]dhkl [ Å]FWHM [deg]Crystal size [nm]Lattice parameter [ Å]
1 0 022.2793.98690.166548.61
1 1 031.8262.80930.219337.65
1 1 139.3122.28990.25333.33
2 0 045.6321.98640.274831.35
Average37.74
3 1 075.6091.25663.972
3 1 180.2811.19483.961
2 2 284.3781.14693.972
Average3.969
DOI: https://doi.org/10.1515/msp-2016-0020 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 63 - 68
Submitted on: Apr 12, 2015
Accepted on: Dec 7, 2015
Published on: Apr 27, 2016
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2016 M.E. Azim Araghi, N. Shaban, M. Bahar, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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