TY - JOUR
T1 - New phase transition of erbium-doped KNbO3 polycrystalline
AU - Wen, Cheng Hung
AU - Chu, Sheng Yuan
AU - Juang, Yung Der
AU - Wen, Cheng Kuo
N1 - Funding Information:
This research was supported by the National Science Council of Republic of China, under Grant no. NSC-93-2216-E-006-033 and Micro-Nano Technology Research Center of National Cheng Kung University.
PY - 2005/6/15
Y1 - 2005/6/15
N2 - Raman scattering, Stokes photoluminescence (PL) spectroscopy and differential scanning calorimetry (DSC) measurements have been used to study the phase transition of 2 mol% erbium-doped potassium niobate (KNbO3) polycrystalline. The low-temperature Raman scattering experiments showed that the phase transition occurred at around 200 and 300 K, and the DSC thermograms indicated that the phase transition occurred at 203, 290, 481 and 666 K, respectively. Comparing our results with Matthias's, we proposed that 2 mol% erbium-doped KNbO3 polycrystalline exhibits a new phase transition at 203 K. The PL spectra intensity was also unusual during these temperatures; a strong non-exponential behavior was found. From these results of Raman scattering, DSC and PL, we concluded that the behavior of 2 mol% erbium-doped KNbO3 polycrystalline at 203 K should be a new phase transition.
AB - Raman scattering, Stokes photoluminescence (PL) spectroscopy and differential scanning calorimetry (DSC) measurements have been used to study the phase transition of 2 mol% erbium-doped potassium niobate (KNbO3) polycrystalline. The low-temperature Raman scattering experiments showed that the phase transition occurred at around 200 and 300 K, and the DSC thermograms indicated that the phase transition occurred at 203, 290, 481 and 666 K, respectively. Comparing our results with Matthias's, we proposed that 2 mol% erbium-doped KNbO3 polycrystalline exhibits a new phase transition at 203 K. The PL spectra intensity was also unusual during these temperatures; a strong non-exponential behavior was found. From these results of Raman scattering, DSC and PL, we concluded that the behavior of 2 mol% erbium-doped KNbO3 polycrystalline at 203 K should be a new phase transition.
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U2 - 10.1016/j.jcrysgro.2005.03.033
DO - 10.1016/j.jcrysgro.2005.03.033
M3 - Article
AN - SCOPUS:19944413640
SN - 0022-0248
VL - 280
SP - 179
EP - 184
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 1-2
ER -