| Title of Article |
Microstructure and optical properties of La0.5Sr0.5Ti1xFexO3 nanoparticles prepared by thermal decomposition |
| Date of Acceptance |
21 April 2014 |
| Journal |
| Title of Journal |
Microelectronic Engineering |
| Standard |
ISI |
| Institute of Journal |
ELSEVIER |
| ISBN/ISSN |
Microelectronic Engineering |
| Volume |
2014 |
| Issue |
126 |
| Month |
april |
| Year of Publication |
2015 |
| Page |
31-36 |
| Abstract |
La0.5Sr0.5Ti1–xFexO3 (x = 0.005, 0.010, 0.015, and 0.020) nanoparticles were synthesized by thermal decom- position method at a calcination temperature of 900 °C for 3 h in air. The X-ray diffraction (XRD) results show the perovskite structure of all samples with the lattice type of cubic and the calculated crystallite size is in the range of 24–34 nm. Transmission electron microscopy (TEM) bright field images show the agglomeration of nanoparticles with size of 100 nm and larger. The corresponding selected-area electron diffraction (SAED) patterns show ring patterns of cubic structure which is in agreement with the XRD results. Optical absorption measurements using UV–visible spectroscopy show the absorption edge of La0.5Sr0.5TiO3 at 385 nm and those of Fe-doped La0.5Sr0.5TiO3 nanoparticles at around 425 nm. The energy gap is found to be decreased with increasing Fe concentration. The X-ray absorption spectroscopy (XAS) results of La0.5Sr0.5Ti1–xFexO3 nanoparticles indicate the oxidation states of 2+ and 3+ for Fe cations in all samples. |
| Keyword |
La0.5Sr0.5Ti1–xFexO3 Thermal decomposition Optical property Energy gap XAS |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
false |
| Attach file |
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| Citation |
0
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Publication
Journal Publication
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