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Title: Crystallization and spectroscopic properties investigations of Er{sup 3+} doped transparent glass ceramics containing CaF{sub 2}

Abstract

Transparent oxyfluoride glass ceramics with composition of 45SiO{sub 2}-25Al{sub 2}O{sub 3}-5CaCO{sub 3}-10NaF-15CaF{sub 2}-0.5ErF{sub 3} (in mol%) were developed through controlled crystallization of melt-quenched glass. Non-isothermal crystallization kinetics investigation showed that the average apparent activation energy E {sub a} and Avrami exponent n are about 283 kJ/mol and 2.22, respectively, indicating the crystallization a three dimensional crystal growth process controlled by the diffusion with a decreasing nucleation rate. X-ray diffraction (XRD) analysis and transmission electron microscopy (TEM) observation revealed the precipitation of CaF{sub 2} crystallites sized about 15 nm among the glass matrix after heat-treatment at 650 deg. C for 2 h. For as-made glass, no upconversion signals were detected when excited with a 30 mW diode laser at 980 nm, while strong upconversion emissions at 545, 660 and 800 nm were obtained for transparent glass ceramic under similar excitation conditio000.

Authors:
 [1];  [2];  [1];  [1];  [1];  [1]
  1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Yangqiao West Road 155, Fuzhou 350002 (China)
  2. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Yangqiao West Road 155, Fuzhou 350002 (China). E-mail: yswang@fjirsm.ac.cn
Publication Date:
OSTI Identifier:
20891611
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 41; Journal Issue: 1; Other Information: DOI: 10.1016/j.materresbull.2005.07.016; PII: S0025-5408(05)00272-2; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AFTER-HEAT; CALCIUM FLUORIDES; CERAMICS; DOPED MATERIALS; ERBIUM IONS; EXCITATION; GLASS; LASERS; MICROSTRUCTURE; OPTICAL PROPERTIES; PRECIPITATION; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Hu Zhongjian, Wang Yuansheng, Ma En, Bao Feng, Yu Yunlong, and Chen Daqin. Crystallization and spectroscopic properties investigations of Er{sup 3+} doped transparent glass ceramics containing CaF{sub 2}. United States: N. p., 2006. Web.
Hu Zhongjian, Wang Yuansheng, Ma En, Bao Feng, Yu Yunlong, & Chen Daqin. Crystallization and spectroscopic properties investigations of Er{sup 3+} doped transparent glass ceramics containing CaF{sub 2}. United States.
Hu Zhongjian, Wang Yuansheng, Ma En, Bao Feng, Yu Yunlong, and Chen Daqin. Thu . "Crystallization and spectroscopic properties investigations of Er{sup 3+} doped transparent glass ceramics containing CaF{sub 2}". United States. doi:.
@article{osti_20891611,
title = {Crystallization and spectroscopic properties investigations of Er{sup 3+} doped transparent glass ceramics containing CaF{sub 2}},
author = {Hu Zhongjian and Wang Yuansheng and Ma En and Bao Feng and Yu Yunlong and Chen Daqin},
abstractNote = {Transparent oxyfluoride glass ceramics with composition of 45SiO{sub 2}-25Al{sub 2}O{sub 3}-5CaCO{sub 3}-10NaF-15CaF{sub 2}-0.5ErF{sub 3} (in mol%) were developed through controlled crystallization of melt-quenched glass. Non-isothermal crystallization kinetics investigation showed that the average apparent activation energy E {sub a} and Avrami exponent n are about 283 kJ/mol and 2.22, respectively, indicating the crystallization a three dimensional crystal growth process controlled by the diffusion with a decreasing nucleation rate. X-ray diffraction (XRD) analysis and transmission electron microscopy (TEM) observation revealed the precipitation of CaF{sub 2} crystallites sized about 15 nm among the glass matrix after heat-treatment at 650 deg. C for 2 h. For as-made glass, no upconversion signals were detected when excited with a 30 mW diode laser at 980 nm, while strong upconversion emissions at 545, 660 and 800 nm were obtained for transparent glass ceramic under similar excitation conditio000.},
doi = {},
journal = {Materials Research Bulletin},
number = 1,
volume = 41,
place = {United States},
year = {Thu Jan 05 00:00:00 EST 2006},
month = {Thu Jan 05 00:00:00 EST 2006}
}