Fabrication and characterization of IR-transparent Fe2+ doped MgAl2O4 ceramics

被引：14

作者：

Osipov, Vladimir V. ^{[1
]}

Shitov, Vladislav A. ^{[1
]}

Maksimov, Roman N. ^{[1
,2
]}

Lukyashin, Konstantin E. ^{[1
]}

Solomonov, Vladimir I. ^{[1
,2
]}

Ishchenko, Aleksey V. ^{[2
]}

机构：

[1] RAS, Inst Electrophys, UrB, Ekaterinburg, Russia

[2] Ural Fed Univ, Ekaterinburg, Russia

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2019年 / 102卷 / 08期

基金：

俄罗斯基础研究基金会;

关键词：

SPINEL; FE3+; EPR;

D O I：

10.1111/jace.16333

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Initial investigations on the preparation of highly transparent Fe2+:MgAl2O4 ceramics using nanopowders synthesized in a laser plume were carried out. For the first time, dense Fe2+:MgAl2O4 ceramics with high transmission in the mid-IR range were fabricated at a temperature as low as 1300 degrees C and with a short sintering time (1 hour). The obtained Fe2+:MgAl2O4 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 lambda = 4 mu m, which is close to the theoretical value. The absorption cross section of divalent iron ions was estimated to be sigma = (1.66 +/- 0.14) x 10(-20) cm(2).

引用

页码：4757 / 4764

页数：8

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