Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method

Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method

Nanosized (10-70 nm) Al₂O₃ doped with manganese ions (Mn³⁺) was obtained by combustion method. It was found that the resulting powder consists of a mixture of transition aluminas (δ*, δ, θ), among which δ*-phase is dominant. It was shown that a part of Mn ions exists in the oxidation state +2 and oc...

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Дата:2018
Автори: Berezovskaya, I.V., Khomenko, O.V., Poletaev, N.I., Khlebnikova, M.E., Stoyanova, I.V., Efryushina, N.P., Dotsenko, V.P.
Формат: Стаття
Мова:English
Опубліковано: НТК «Інститут монокристалів» НАН України 2018
Назва видання:Functional Materials
Теми:
Characterization and properties
Онлайн доступ:http://dspace.nbuv.gov.ua/handle/123456789/157177
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method / I.V. Berezovskaya, O.V. Khomenko, N.I. Poletaev, M.E. Khlebnikova, I.V. Stoyanova, N.P. Efryushina, V.P. Dotsenko // Functional Materials. — 2018. — Т. 25, № 3. — С. 490-495. — Бібліогр.: 28 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
id irk-123456789-157177
record_format dspace
spelling irk-123456789-1571772019-06-20T01:27:58Z Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method Berezovskaya, I.V. Khomenko, O.V. Poletaev, N.I. Khlebnikova, M.E. Stoyanova, I.V. Efryushina, N.P. Dotsenko, V.P. Characterization and properties Nanosized (10-70 nm) Al₂O₃ doped with manganese ions (Mn³⁺) was obtained by combustion method. It was found that the resulting powder consists of a mixture of transition aluminas (δ*, δ, θ), among which δ*-phase is dominant. It was shown that a part of Mn ions exists in the oxidation state +2 and occupies tetrahedral positions in δ*-Al₂O₃, causing a broadband luminescence with a maximum at ~ 520 nm. Annealing in air at temperatures ≤1130 °C results in the formation of stable α-polymorph. It is shown that the δ*, θ -> α-Al₂O₃ phase transition is followed by oxidation of Mn²⁺/Mn³⁺ ions and the stabilization of some amount of manganese ions in the oxidation state +4 on octahedral Al positions. 2018 Article Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method / I.V. Berezovskaya, O.V. Khomenko, N.I. Poletaev, M.E. Khlebnikova, I.V. Stoyanova, N.P. Efryushina, V.P. Dotsenko // Functional Materials. — 2018. — Т. 25, № 3. — С. 490-495. — Бібліогр.: 28 назв. — англ. 1027-5495 DOI:https://doi.org/10.15407/fm25.03.490 http://dspace.nbuv.gov.ua/handle/123456789/157177 en Functional Materials НТК «Інститут монокристалів» НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Characterization and properties
Characterization and properties
spellingShingle Characterization and properties
Characterization and properties
Berezovskaya, I.V.
Khomenko, O.V.
Poletaev, N.I.
Khlebnikova, M.E.
Stoyanova, I.V.
Efryushina, N.P.
Dotsenko, V.P.
Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method
Functional Materials
description Nanosized (10-70 nm) Al₂O₃ doped with manganese ions (Mn³⁺) was obtained by combustion method. It was found that the resulting powder consists of a mixture of transition aluminas (δ*, δ, θ), among which δ*-phase is dominant. It was shown that a part of Mn ions exists in the oxidation state +2 and occupies tetrahedral positions in δ*-Al₂O₃, causing a broadband luminescence with a maximum at ~ 520 nm. Annealing in air at temperatures ≤1130 °C results in the formation of stable α-polymorph. It is shown that the δ*, θ -> α-Al₂O₃ phase transition is followed by oxidation of Mn²⁺/Mn³⁺ ions and the stabilization of some amount of manganese ions in the oxidation state +4 on octahedral Al positions.
format Article
author Berezovskaya, I.V.
Khomenko, O.V.
Poletaev, N.I.
Khlebnikova, M.E.
Stoyanova, I.V.
Efryushina, N.P.
Dotsenko, V.P.
author_facet Berezovskaya, I.V.
Khomenko, O.V.
Poletaev, N.I.
Khlebnikova, M.E.
Stoyanova, I.V.
Efryushina, N.P.
Dotsenko, V.P.
author_sort Berezovskaya, I.V.
title Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method
title_short Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method
title_full Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method
title_fullStr Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method
title_full_unstemmed Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method
title_sort oxidation states and microstructure of manganese impurity centers in nanosized al₂o₃ obtained by combustion method
publisher НТК «Інститут монокристалів» НАН України
publishDate 2018
topic_facet Characterization and properties
url http://dspace.nbuv.gov.ua/handle/123456789/157177
citation_txt Oxidation states and microstructure of manganese impurity centers in nanosized Al₂O₃ obtained by combustion method / I.V. Berezovskaya, O.V. Khomenko, N.I. Poletaev, M.E. Khlebnikova, I.V. Stoyanova, N.P. Efryushina, V.P. Dotsenko // Functional Materials. — 2018. — Т. 25, № 3. — С. 490-495. — Бібліогр.: 28 назв. — англ.
series Functional Materials
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AT khomenkoov oxidationstatesandmicrostructureofmanganeseimpuritycentersinnanosizedal2o3obtainedbycombustionmethod
AT poletaevni oxidationstatesandmicrostructureofmanganeseimpuritycentersinnanosizedal2o3obtainedbycombustionmethod
AT khlebnikovame oxidationstatesandmicrostructureofmanganeseimpuritycentersinnanosizedal2o3obtainedbycombustionmethod
AT stoyanovaiv oxidationstatesandmicrostructureofmanganeseimpuritycentersinnanosizedal2o3obtainedbycombustionmethod
AT efryushinanp oxidationstatesandmicrostructureofmanganeseimpuritycentersinnanosizedal2o3obtainedbycombustionmethod
AT dotsenkovp oxidationstatesandmicrostructureofmanganeseimpuritycentersinnanosizedal2o3obtainedbycombustionmethod
first_indexed 2023-05-20T17:51:38Z
last_indexed 2023-05-20T17:51:38Z
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