Influence of yttrium content on the location of rare earth ions in LYSO:Ce crystals

Journal Article · Wed Jan 15 04:00:00 EST 2014 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2013.10.018· OSTI ID:22274175

Ding, Dongzhou ^[1]; Weng, Linhong ^[2]; Yang, Jianhua; Ren, Guohao; Wu, Yuntao ^[1]

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1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, No. 1295 Dingxi Road, Shanghai 200050 (China)
2. Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433 (China)

Single-crystal X-ray diffraction (SCD), X-ray fluorescence (XRF), inductively coupled plasma optical emission spectroscopy (ICP-OES) and X-ray excited luminescence (XEL) measurements were performed to investigate structure details and segregation coefficients of (Lu{sub 1−x}Y{sub x}){sub 2}SiO{sub 5}:Ce (x=0 at%, 8.7 at%, 25.7 at%, 44.7 at%, 65.7 at%, 87.9 at% and 100 at%). Y{sup 3+} cations were found to have a preferential occupation for RE1 site (7-oxygen-coordinated) over RE2 site (6-oxygen-coordinated), which results in a greater increase of cell parameter c than that of a with increase in Y content due to LYSO's microstructure characteristics. Results presented here revealed that the less the difference in electronegativity and effective ionic radius between the two ions, the easier substitution of one ion by the other, and hence the higher segregation coefficients. Besides, the contribution of luminescence of Ce1 and Ce2 in the whole XEL was evaluated, and the location of Ce{sup 3+} ion was discussed. - Graphical abstract: Segregation coefficients of (Lu{sub 1−x}Y{sub x}){sub 2}SiO{sub 5}:Cce:italic> at RT/ce:italic>. Display Omitted.

• OSTI ID: 22274175
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. 209; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CATIONS
CERIUM
CERIUM IONS
CRYSTAL STRUCTURE
DOPED MATERIALS
ELECTRONEGATIVITY
EMISSION SPECTROSCOPY
FLUORESCENCE
LUTETIUM
MICROSTRUCTURE
MONOCRYSTALS
OXYGEN
PLASMA
SEGREGATION
X RADIATION
X-RAY DIFFRACTION
X-RAY FLUORESCENCE ANALYSIS
YTTRIUM
YTTRIUM IONS