Optical Properties of MgAl2O4 Crystals Grown by Iridium-Free Technology

被引：3

作者：

Nizhankovskyi, S. ^{[1
]}

Kozlovskyi, A. ^{[1
]}

Vovk, O. ^{[1
]}

Sidelnikova, N. S. ^{[1
]}

Siryk, Yu, V ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, STC Inst Single Crystals, Inst Single Crystals, 60 Nauky Ave, UA-61001 Kharkiv, Ukraine

来源：

ACTA PHYSICA POLONICA A | 2022年 / 141卷 / 04期

关键词：

magnesium-aluminum spinel; horizontal directional crystallization method; molybdenum; optical absorption;

D O I：

10.12693/APhysPolA.141.371

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It was carried out the investigation of optical absorption of magnesium-aluminum spinel (MgAl2O4) crystals. The crystals were grown by horizontal directional crystallization method in molybdenum crucible under the protective atmosphere Ar+(CO, H-2). The optical absorption spectra of MgAl2O4 crystals exhibit absorption bands (267 and 325 nm) caused by complexes of defects formed by oxygen vacancies and cations located in anti-sites. It is shown that annealing of crystals in an oxidizing environment at T = 1500 degrees C leads to the elimination of these absorption bands and the improvement of the optical properties of the grown crystals.

引用

页码：371 / 373

页数：3

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