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Effects of Pyrolysis Temperature on Structural, Raman, and Infrared Properties of Perovskite PbTiO3 Nanotubes

Title
Effects of Pyrolysis Temperature on Structural, Raman, and Infrared Properties of Perovskite PbTiO3 Nanotubes
Authors
Yang, Sun A.Kim, Byung HoonCho, Sam YeonHan, Jin KyuBu, Sang DonChoi, Yong Chan
DGIST Authors
Choi, Yong Chan
Issue Date
2016-02
Citation
Journal of the Korean Physical Society, 68(4), 545-550
Type
Article
Article Type
Article
Keywords
PbTiO3 NanotubesPyrolysisSol-Gel ProcessTetragonality
ISSN
0374-4884
Abstract
In this work, we investigated the effects of the pyrolysis temperature on the structural, Raman, and infrared properties of PbTiO3 nanotubes (PTO-NTs). The PTO-NTs were synthesized by spin coating a sol-gel solution on porous anodic alumina membranes, followed by the pyrolysis step at 400 − 600 ℃. Then, PTO-NTs were finally crystallized at 600 − 700 ℃ in an oxygen atmosphere to get the perovskite phase. The PTO-NTs had an outer diameter of about 420 nm and a wall thickness of about 10 nm. X-ray diffraction patterns showed that the tetragonality (c/a) increased from 1.019 to 1.028 as the pyrolysis temperature was increased from 400 to 600 ℃. Raman spectroscopy showed that the phonon modes of A1(nTO) and E(nTO) increased with a redshift of the A1(3TO) mode as the pyrolysis temperature was increased. In the Fourier-transform infrared spectra of PTO-NTs embedded in the porous anodic alumina membrane, the transmittance of the band at 499 cm−1 increased as the pyrolysis temperature was increased, which might be due to an increase in the tetragonality. © 2016, The Korean Physical Society.
URI
http://hdl.handle.net/20.500.11750/5122
DOI
10.3938/jkps.68.545
Publisher
Korean Physical Society
Related Researcher
  • Author Choi, Yong Chan  
  • Research Interests Solar Cells; Chalcohalides; chalcohalides; sulfides; selenides
Files:
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Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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