title: Effect of nano-scale crystal field on the broadening of Er3+- emission in sodium tellurite glass ceramics.
abstract: In this paper we report the effect of heat treatment of 10 mol% Na(2)O-89.5 mol% TeO(2) glass for studying the fluorescence and line broadening behavior of Er-ions in the glass-ceramic matrix. Controlled crystal growth measurements using the X-ray line broadening technique for samples heat treated in the temperature range of 583-693 K were carried out and compared with the photoluminescence studies. The influence of crystal growth on line broadening of (4)I(13/2) spectra and metastable lifetime of (4)I(13/2) level is compared for various heat treatment temperatures. The full-width-of- half maxima increase with increasing heat treatment temperature and then fall rapidly at high temperatures.
authors.affiliation: The Institute for Materials Research, Houldsworth Building, The University of Leeds, Leeds LS2 9JT, United Kingdom. a.jha@leeds.ac.uk
authors.forename: Animesh
authors.initials: A
authors.lastname: Jha
authors.forename: Purushottam
authors.initials: P
authors.lastname: Joshi
authors.forename: Shaoxing
authors.initials: S
authors.lastname: Shen
mesh_terms: D002516:Ceramics / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D004871:Erbium / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D008027:Light; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D012542:Scattering, Radiation; D013691:Tellurium / Q000737:chemistry*
chemical_list: C032039:sodium tellurate(IV); D004871:Erbium; D013691:Tellurium