| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5360829 | Applied Surface Science | 2009 | 5 Pages |
Abstract
Tetragonal phase KTa0.6Nb0.4O3 (KTN) nanoparticles have been prepared by hydrothermal method. The obtained particles were characterized by X-ray powder diffraction, transmission electron microscopy, energy dispersive X-ray spectroscopy and UV-vis absorption spectrum techniques. A systematic change in crystal structure from cubic to tetragonal is observed with the increase of reaction temperature and KOH concentration. Room temperature UV-vis absorption spectrums of KTN particles show that the band gap changes from 3.24 to 3.34Â eV with grain size diminished, which reveals the existence of blue-shift phenomenon of absorption bands.
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Authors
Zheng Keyu, Zhang Duanming, Zhong Zhicheng, Yang Fengxia, Xiangyun Han,