Physical properties of multicomponent fluoride glasses for photonic and superionic applications |
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| Authors: | V Trnovcová R M Zakalyukin N I Sorokin D Lezal P P Fedorov E Illeková M Ozvoldová A Skubla B P Sobolev |
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| Institution: | (1) Department of Physics, Faculty of Materials Science & Technology, Slovak University of Technology, SK - 917 24 Trnava, Slovakia;(2) Institute of Physics, Slovak Academy of Sciences, SK - 84228 Bratislava, Slovakia;(3) Shubnikoff's Institute of Crystallography, Russian Academy of Sciences, 117333 Moscow, Russia;(4) Laboratory of Inorganic Materials, Institute of Inorganic Chemistry, Academy of Sciences of Czech Republic & University of Chemical Technology, CZ - 250 68 Rez u Prahy, Czech Republic |
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| Abstract: | Heavy metal fluoride glasses are promising materials for ultra-low loss mid-infrared optical fibers. The fibers are applied
in remote spectroscopy, laser surgery, and thermal imaging. Upon doping with rare earth ions, heavy metal fluoride fibers
are suitable for a development of high power laser materials, up-conversion lasers, and optical amplifiers for telecommunications
systems. As heavy metal fluorides are prospective fast fluoride ion conductors, fluoride glasses based on ZrF4, BaF2, LaF3, AlF3 and NaF (ZBLAN), PbF2, InF3, BaF2, AlF3, LaF3 (PIBAL) or ZnF2, BaF2, InF3, SrF2, AlF3, NaF (ZBISAN) are interesting for a development of glassy or fibrous ionic conductors. In this paper, the ionic conductivity
and dielectric response of the abovementioned multicomponent fluoride glasses is studied. The influence of the glass composition
on the glass transition temperature (Tg) and on the crystallization temperature (Tcr) is also reported. The optimum composition and drawing temperature for fluoride glass fibers is specified.
Paper presented at the 7th Euroconference on Ionics, Calcatoggio, Corsica, France, Oct. 1–7, 2000. |
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