TY - JOUR
T1 - Using Raman scattering to study the doping effect and low-temperature phase transition of Li0.01K0.99NbO3 ceramics
AU - Dai, S. B.
AU - Juang, Y. D.
AU - Hwang, J. S.
AU - Chu, S. Y.
N1 - Funding Information:
This research project was supported by research grant No. NSC902112M024001 from the National Science Council of the Republic of China.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2003/10
Y1 - 2003/10
N2 - This article, reports on the results of low-temperature Raman scattering from Li0.01K0.99NbO3 ceramic in the rhombohedral-orthorhomic phase transitions. The spectral pattern of Li 0.01K0.99NbO3 indicated that the phase transition occurred at around 150K during cooling and at 190K during heating. The observed spectra are discussed in terms of relationship to the translational and vibrational modes of K atoms against the NbO6 octahedron, the vibrational or librational mode of the oxygen octahedron and the internal stretching mode of NbO6. The phase transition temperature of Li0.01K0.99NbO3 is lower than that of pure KNbO3 by approximately 60K. These phenomena are associated with the Li-doped effect.
AB - This article, reports on the results of low-temperature Raman scattering from Li0.01K0.99NbO3 ceramic in the rhombohedral-orthorhomic phase transitions. The spectral pattern of Li 0.01K0.99NbO3 indicated that the phase transition occurred at around 150K during cooling and at 190K during heating. The observed spectra are discussed in terms of relationship to the translational and vibrational modes of K atoms against the NbO6 octahedron, the vibrational or librational mode of the oxygen octahedron and the internal stretching mode of NbO6. The phase transition temperature of Li0.01K0.99NbO3 is lower than that of pure KNbO3 by approximately 60K. These phenomena are associated with the Li-doped effect.
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U2 - 10.1016/S0022-0248(03)01475-1
DO - 10.1016/S0022-0248(03)01475-1
M3 - Article
AN - SCOPUS:0042861658
SN - 0022-0248
VL - 257
SP - 316
EP - 320
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 3-4
ER -