The effect of the halide-ion (F–, Cl–) dopant nature on the local structure and hydration processes of brownmillerite Ba2In2O5

Halogen-substituted barium indate Ba 2 In 2 O 5 based brownmillerites Ba 1.95 In 2 O 4.9 F 0.1 and Ba 1.95 In 2 O 4.9 Cl 0.1 have been synthesized. It has been verified radiographically that the single-phase condition is satisfied. The effect of the substituent ion nature on parameters of the crysta...

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Bibliographic Details
Published inOptics and spectroscopy Vol. 123; no. 1; pp. 44 - 48
Main Authors Tarasova, N. A., Animitsa, I. E.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.07.2017
Springer Nature B.V
Subjects
Brownmillerite
Calcium aluminum ferrite
Condensed-Matter Spectroscopy
Crystal structure
Doping
Hydration
Indium
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
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Summary:Halogen-substituted barium indate Ba 2 In 2 O 5 based brownmillerites Ba 1.95 In 2 O 4.9 F 0.1 and Ba 1.95 In 2 O 4.9 Cl 0.1 have been synthesized. It has been verified radiographically that the single-phase condition is satisfied. The effect of the substituent ion nature on parameters of the crystalline lattice and lengths of In–O bonds has been revealed. The propensity of the phases under study for hydration and formation of energetically unequal ОН – groups in the structure has been proved. In both the cases of doping, the degree of hydration decreased as compared to barium indate Ba 2 In 2 O 5 , which is caused by the participation of the halide ion in the tetrahedral site of indium.
ISSN:0030-400X
1562-6911
DOI:10.1134/S0030400X17070268