1. X-ray photoelectron spectroscopy study and vibration spectra of neodymium doped and undoped Ca0.28Ba0.72Nb2O6 crystal
- Author
-
Gao, W.L., Zhang, H.J., Huang, B.B., Wei, R.S., Hu, X.B., Wang, J.Y., Jiang, M.H., and Boughton, R.I.
- Subjects
- *
X-ray photoelectron spectroscopy , *VIBRATIONAL spectra , *NEODYMIUM , *CALCIUM compounds , *MOLECULAR structure , *POINT defects - Abstract
Abstract: Calcium barium niobate (Ca0.28Ba0.72Nb2O6, CBN-28) crystallizes with an unfilled tungsten bronze (TB) type structure in the tetragonal system. X-ray photoelectron spectroscopy (XPS) has been performed to explore the effect of Nd-doping on the local electronic environment in the CBN-28 crystal. The content of oxygen vacancies is increased after Nd-doping. The Raman scattering spectrum has been investigated using the back scattering configuration on a CBN-28 crystal and on a crystal with Nd-doping. Comparison of the Raman data obtained for the undoped and Nd-doped CBN-28 crystals reveals slight differences in the shape and position of the Raman peaks. The difference is not readily apparent due to the low Nd3+ content and the intrinsic disorder of the tetragonal tungsten bronze structure. [Copyright &y& Elsevier]
- Published
- 2010
- Full Text
- View/download PDF