The composition, luminescence, and structure of Sr-8[Si4O12]Cl-8 : Eu2+

Authors
Wang, JG Li, GB Tian, SJ Liao, FH Jing, XP
Citation
Jg. Wang et al., The composition, luminescence, and structure of Sr-8[Si4O12]Cl-8 : Eu2+, MATER RES B, 36(11), 2001, pp. 2051-2057
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS RESEARCH BULLETIN
ISSN journal
00255408 → ACNP
Volume
36
Issue
11
Year of publication
2001
Pages
2051 - 2057
Database
ISI
SICI code
0025-5408(20010915)36:11<2051:TCLASO>2.0.ZU;2-A
Abstract
Based on the investigation of phases present and luminescence of the system Sr-8[Si4xO4+8x]Cl-8: Eu2+, the correct formula for this material was deter mined as Sr-8[Si4O12]Cl-8:Eu2+ rather than Sr4Si3O8Cl4:Eu2+, which had been assumed previously. The structure of this material was refined by the Riet veld method using powder X-ray diffraction data, which has a tetragonal uni t cell with space group I4/m, Z = 2, a = 1.11814(1)nm, c = 0.95186(1) nm. I n this structure, Sr has one site; therefore, when Eu2+ is doped in, the lu minescence gives only one broad emission peak. (C) 2001 Elsevier Science Lt d. All rights reserved.