Synthesis, structure and spectroscopy of Fe2+:MgAl2O4 transparent ceramics and glass-ceramics

被引:25
作者
Basyrova, Liza [1 ]
Bukina, Vasilisa [2 ]
Balabanov, Stanislav [3 ]
Belyaev, Alexander [3 ]
Drobotenko, Viktor [3 ]
Dymshits, Olga [4 ]
Alekseeva, Irina [4 ]
Tsenter, Marina [4 ]
Zapalova, Svetlana [4 ]
Khubetsov, Alexander [4 ]
Zhilin, Alexander [4 ]
Volokitina, Anna [1 ]
Vitkin, Vladimir [1 ]
Mateos, Xavier [5 ]
Serres, Josep Maria [5 ]
Camy, Patrice [6 ]
Loiko, Pavel [6 ]
机构
[1] ITMO Univ, Kronverkskiy Pr 49, St Petersburg 197101, Russia
[2] St Petersburg Min Univ, 2 21st Line Vasilyevski Ostrov, St Petersburg 197101, Russia
[3] RAS, GG Devyatykh Inst Chem High Pur Subst, 49 Tropinin St, Nizhnii Novgorod 603951, Russia
[4] Vavilov State Opt Inst, 36 Babushkina St, St Petersburg 192171, Russia
[5] Univ Rovira & Virgili URV, Fis & Cristal Mat & Nanomat FiCMA FiCNA EMaS, Dept Quim Fis & Inorgan, Campus Sescelades, E-43007 Tarragona, Spain
[6] Univ Caen Normandie, Ctr Rech Ions Mat & Photon CIMAP, CNRS, UMR 6252,CEA,ENSICAEN, 6 Blvd Marechal Juin, F-14050 Caen 4, France
关键词
Transparent ceramics; Transparent glass-ceramics; Spinel; Iron ions; Microstructure; Spectroscopy; MAGNESIUM ALUMINOSILICATE GLASSES; OPTICAL-PROPERTIES; ALUMINATE SPINEL; MGAL2O4; SPINEL; ABSORPTION SATURATION; SATURABLE ABSORBERS; LATTICE-VIBRATIONS; PHASE-SEPARATION; SILICATE-GLASSES; FERROUS IRON;
D O I
10.1016/j.jlumin.2021.118090
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We report on a comparative study of a transparent Fe:MgAl2O4 (spinel) ceramics and a transparent nanophase Fe: MgAl2O4-based glass-ceramics. The 0.1 mol% Fe:MgAl2O4 ceramics was synthesized by hot pressing (at 1500 degrees C/50 MPa) of powders obtained by the sol-gel method using LiF as a sintering aid. The Fe:MgAl2O4 ceramic is a single-phase material (cubic structure, sp. gr. Fd3(-) m, a = 8.083 angstrom) with a mean grain size of similar to 50 mu m. The ceramic exhibits a broadband transparency of 0.2-6.0 mu m and a high in-line transmission at similar to 1 mu m of 74.4%. The iron ions are presented in the ceramics in the single state of Fe2+ species in tetrahedral (T-d) sites. A broad absorption band spanning from similar to 1.2 to 3.7 mu m assigned to the E-5 -> T-5(2) (D-5) transition of Fe2+ ions in T-d sites is observed, corresponding to a ground-state absorption cross section of 0.28 x 10(-18) cm(2) at 1.90 mu m. The glass-ceramics were prepared by secondary two-stage heat-treatments of the magnesium aluminosilicate glass nucleated by titanium oxide and doped with 0.1 mol% FeO. Transparent Fe:MgAl2O4-based glass-ceramics obtained at the temperature of the second stage of 800-1000 degrees C were multi-phase materials containing two crystalline nanophases, i.e., spinel (mean size: 3.7-7.4 nm) and magnesium aluminotitanate solid solution (mean size: 6.4-20.6 nm), as well as residual silica-rich glass. Glass-ceramics obtained at the temperature of the second stage of 1050 degrees C were transparent and based on Fe-doped sapphirine. For glass-ceramics, absorption has a much more complex character as it is caused by interplay of iron and titanium ions in different valence states, coordination sites and locations. The iron ions enter the spinel nanocrystals but unlike the ceramic, in the form of both Fe-VI(2+) and Fe-IV(2+) species. The developed ceramics and glass-ceramics are promising for saturable absorbers of mid-infrared (2-3 mu m) lasers.
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页数:17
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