Synthesis and Eu{sup 3+} luminescence in new oxysilicates, ALa{sub 3}Bi(SiO{sub 4}){sub 3}O and ALa{sub 2}Bi{sub 2}(SiO{sub 4}){sub 3}O [A=Ca, Sr and Ba] with apatite-related structure
Journal Article
·
· Journal of Solid State Chemistry
- Materials Science Research Centre and Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036 (India)
New oxysilicates with the general formula ALa{sub 3}Bi(SiO{sub 4}){sub 3}O and ALa{sub 2}Bi{sub 2}(SiO{sub 4}){sub 3}O [A=Ca, Sr and Ba] are synthesized and characterized. Powder X-ray diffraction of these silicates show that they are isostructural with BiCa{sub 4}(VO{sub 4}){sub 3}O which has an apatite-related structure. Eu{sup 3+} luminescence in the newly synthesized oxysilicates show broad emission lines due to disorder of cations. The relatively high intense magnetic dipole transition {sup 5}D{sub 0}->{sup 7}F{sub 1} points to a more symmetric environment. The photoluminescence results confirm that the compounds have apatite-related crystal structure.
- OSTI ID:
- 20784761
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 11 Vol. 178; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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