Direct observation of Nd{sup 3+} and Tm{sup 3+} ion distributions in oxy-fluoride glass ceramics containing PbF{sub 2} nanocrystals

Journal Article · Mon Dec 15 00:00:00 EST 2014 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2014.10.020· OSTI ID:22403616

Zhang, Jihong ^[1]; Zhao, Zhiyong ^[2]; Liu, Chao ^[2]; Zhang, Gaoke ^[1]; Zhao, Xiujian ^[2]; Heo, Jong ^[3]; Jiang, Yang ^[4]

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1. School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Hongshan, Wuhan, Hubei 430070 (China)
2. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Hongshan, Wuhan, Hubei 430070 (China)
3. Center for Information Materials, Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), San 31, Hyoja-dong, Pohang, Gyeongbuk 790-784 (Korea, Republic of)
4. China Building Material Institute of Solar-Energy Application, Zhenjiang, Jiangsu 212009 (China)

Nd{sup 3+} and Tm{sup 3+}, doped oxy-fluoride glasses and glass ceramics were prepared by conventional melt-quenching and subsequent heat-treatment, respectively. β-PbF{sub 2} nanocrystals with diameter 50 –100 nm formed in the glass matrix after heat treatment. The Stark splitting in absorption peaks, enhanced photoluminescence and prolonged lifetimes that β-PbF{sub 2} nanocrystal formation increased the luminescence of rare earth ions. Both Nd{sup 3+} and Tm{sup 3+} ions were incorporated into nanocrystals that were enriched in lead and fluorine, and deficient in oxygen. - Highlights: • EELS analysis for rare-earth ion distribution in oxy-fluoride glass ceramics • No significant changes in lifetimes of Nd{sup 3+}, while obvious change for Tm{sup 3+} • Direct evidence of Nd{sup 3+} and Tm{sup 3+} aggregation into fluoride nanocrystals.

• OSTI ID: 22403616
• Journal Information: Materials Characterization, Vol. 98; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION
AFTER-HEAT
AGGLOMERATION
CERAMICS
DOPED MATERIALS
ELECTRONS
ENERGY-LOSS SPECTROSCOPY
FLUORINE
GLASS
HEAT TREATMENTS
LEAD FLUORIDES
LIFETIME
MATRIX MATERIALS
NANOSTRUCTURES
NEODYMIUM IONS
OXYFLUORIDES
PHOTOLUMINESCENCE
RARE EARTHS
THULIUM IONS