Effect of heat treatment in HF atmosphere on the optical and electrical properties of BaF2 ceramics

被引：0
|
作者：
N. I. Sorokin
D. N. Karimov
O. N. Komar’kova
E. A. Krivandina
A. N. Smirnov
S. P. Chernov
B. P. Sobolev
机构：
[1] Russian Academy of Sciences,Shubnikov Institute of Crystallography
[2] All-Russia Research Center,Research Institute of Optical Materials Technology, Vavilov State Optical Institute
[3] Moscow State University,undefined
来源：
Inorganic Materials | 2009年 / 45卷
关键词：
Ceramic Sample; Vavilov State Optical Institute; Infrared Transmission Spectrum; Optical Ceramic; Complex Impedance Measurement;
D O I：
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学科分类号：
摘要：
Using optical spectroscopy and complex impedance measurements, we have studied the transmission spectra and electrical conductivity of different BaF2 samples: ceramic prepared by vacuum hot pressing (200 MPa, 870°C, 20 min), the same ceramic after heat treatment in a reactive HF atmosphere (1200°C, 120 min), and a single crystal grown from the melt in vacuum. Heat treatment of the as-prepared BaF2 ceramic in a fluorination atmosphere increases its optical transmission in the range 0.2–0.8 µm on average by a factor of 2 and markedly reduces the selective absorption in the range 6–11 µm. The heat-treated BaF2 ceramic is close in ionic conductivity to the BaF2 single crystal.
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页码：1188 / 1192
页数：4
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