Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10624648 | Ceramics International | 2015 | 6 Pages |
Abstract
Er3+-doped filled tungsten bronze Ba6Ti2Nb8O30-Sr6Ti2Nb8O30 solid solutions with different Ba6Ti2Nb8O30/Sr6Ti2Nb8O30 ratios (SBTNx) have been prepared by a high temperature solid-state reaction. The crystal structure has been investigated simultaneously by the Rietveld structural refinement and upconversion photoluminescence (UC-PL) spectra. It is found that the crystal structure of SBTNx changes from TE-FTB symmetry (0â¤xâ¤3, space group P4bm) to OR-FTB symmetry (3.5â¤xâ¤5.91, space group Pba2) with x increasing. More interestingly, the structure transition of SBTNx system is also revealed by the UC-PL spectra which indicate the intimate correlation between the UC-PL spectra and the structure transition. Furthermore, the underlying origin concerning the variation of UC-PL spectra has been studied from crystal structure aspect which suggests UC-PL spectra can be explored as a structure probe for present filled tungsten bronze solid solutions.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
T. Wei, Z. Dong, C.Z. Zhao, P. Li, J. Wu, L.J. Liu, Y.J. Ma, H.Y. Xiao,