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Fabrication and characterization of IR ‐transparent Fe 2+ doped MgAl 2 O 4 ceramics
Author(s) -
Osipov Vladimir V.,
Shitov Vladislav A.,
Maksimov Roman N.,
Lukyashin Konstantin E.,
Solomonov Vladimir I.,
Ishchenko Aleksey V.
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16333
Subject(s) - materials science , transparent ceramics , ceramic , analytical chemistry (journal) , transmittance , doping , sintering , absorption (acoustics) , fabrication , mineralogy , metallurgy , optoelectronics , chemistry , composite material , chromatography , medicine , alternative medicine , pathology
Initial investigations on the preparation of highly transparent Fe 2+ :MgAl 2 O 4 ceramics using nanopowders synthesized in a laser plume were carried out. For the first time, dense Fe 2+ :MgAl 2 O 4 ceramics with high transmission in the mid‐ IR range were fabricated at a temperature as low as 1300°C and with a short sintering time (1 hour). The obtained Fe 2+ :MgAl 2 O 4 ceramics contain a secondary (MgO) 0.91 (FeO) 0.09 phase with a low wt% content, causing a substantial decrease in transmittance in the visible range. The transmittance increases with an increase in wavelength due to a decrease in Rayleigh scattering and reaches 85.6% at λ = 4 μm, which is close to the theoretical value. The absorption cross section of divalent iron ions was estimated to be σ = (1.66 ± 0.14) × 10 −20 cm 2 .
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