Crystal structures and photoluminescence properties of two novel sorosilicates with an unprecedented ratio of di- and trisilicate groups
- Author(s)
- Maria Wierzbicka-Wieczorek, Uwe Kolitsch, Gerard Panczer, Gerald Giester, Chutimun Chanmuang, Andrzej Grzechnik
- Abstract
Ba2Ho10(Si2O7)3(Si3O10)2 and isotypic Ba2Er10(Si2O7)3(Si3O10)2 represent a new mixed-framework structure type with an unprecedented ratio of di- and trisilicate groups among silicates. The atomic arrangement features asymmetric zigzag chains of edge-sharing Ln3+O6 (Ln = Ho, Er) octahedra corner-linked by isolated Si2O7 and horseshoe-shaped Si3O10 groups in the ratio of 3:2. Single-crystal X-ray diffraction investigations yielded the triclinic space group P1 (no. 2), with a = 5.5494(11)/5.5360(11) Å, b = 6.8795(14)/6.6870(13) Å, c = 23.703(5)/23.691(5) Å, a = 83.60(3)/83.64(3)°, ß = 88.80(3)/88.77(3)°, ? = 73.43(3)/73.38(3)°, V = 861.9(3)/835.2(3) Å3, R(F) = 0.0289/0.0559, respectively. The laser-induced photoluminescence emission of trivalent holmium und erbium in both framework silicates was studied using a dispersive single-stage spectrometer and compared to the emission spectra of other framework Ba-Er and Ba-Ho silicates. The 4S3/ 2?4I15/2 transition of Er in Ba2Er10(Si2O7)3(Si3O10)2 causes a photoluminescence emission in the visible green spectral range whereas its Ho representative with the 5F3?5I7 transition in the red spectral region.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- École normale supérieure de Lyon (ENS Lyon), Naturhistorisches Museum Wien (NHM), Friedrich-Schiller-Universität Jena, Rheinisch-Westfälische Technische Hochschule Aachen
- Journal
- Journal of Solid State Chemistry
- Volume
- 252
- Pages
- 33-42
- No. of pages
- 10
- ISSN
- 0022-4596
- DOI
- https://doi.org/10.1016/j.jssc.2017.05.004
- Publication date
- 05-2017
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 104026 Spectroscopy, 105113 Crystallography
- Keywords
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Ceramics and Composites, Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/52959a08-8abb-4335-a76c-28c189f126ab