ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Chloride glasses of the ZnCl2 and 20KCl-20BaCl2-60ZnCl2-0.5ErCl3 systems were prepared using NH4Cl as a dehydrating and chlorinating agent, under the melt-quenching method. Water- and ammonium-chloride-related residues in ZnCl2 glasses were investigated by infrared and near-infrared absorption spectra. Water, Zn—OH, ClO, ClO2−, Zn2+-coordinated water, free NH3, NH4+, and Zn2+-coordinated NH3 were identified in ZnCl2 glasses. 20KCl-20BaCl2-60ZnCl2-0.5ErCl3 glasses prepared by melting at 500°C for 20 min, under reduced pressure, contained the smallest amounts of water, Zn—OH, and Zn2+-coordinated NH3 and showed strong Er3+ upconversion fluorescence.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.2002.tb00287.x
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