Structural features and photoluminescence of new transparent MgAl2O4 nanoceramics with chromium impurity

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Structural features and photoluminescence of new transparent MgAl2O4 nanoceramics with chromium impurity. / Kiryakov, Arseny ; Dhanushkodi, Sivaganesh ; Bajtimirov, Damir et al.
In: Ceramics International, Vol. 50, No. 5, 01.03.2024, p. 7577-7588.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{ab9e6127d4a64f2e9cd919ac3d0ee33b,

title = "Structural features and photoluminescence of new transparent MgAl2O4 nanoceramics with chromium impurity",

abstract = "Optically transparent nanoceramics MgAl2-xO4:Crx (x = 0.005, 0.00005) were synthesized using a thermobaric pressing technology at different pressures (2 GPa–8 GPa). The structure and morphology as well as paramagnetic and photoluminescent properties of the obtained materials were studied using XRD, SEM, optical absorption, EPR and photoluminescent spectroscopy. It is shown that the applied pressure and the content of impurity chromium affect the type and concentration of defects formed in the structure of ceramics as a result of synthesis. The spectral characteristics of the luminescence and excitation of Cr3+ ions and the peculiarities of their change with varying synthesis modes are determined. Using calculations of electron density distributions, it is point out how the covalent character of Mg–O and Al–O bonds affects the lifetime of Cr3+ luminescence. The obtained results indicate the prospects of MgAl2-xO4:Crx nanoceramics for the development of new light-emitting materials.",

author = "Arseny Kiryakov and Sivaganesh Dhanushkodi and Damir Bajtimirov and Yulia Kuznetsova and Tatiana Dyachkova and Alexander Chufarov and Alexander Tyutyunnik",

note = "The work was supported by the Russian Science Foundation grant No. 23-72-01024, https://rscf.ru/project/23-72-01024/ and from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University Program of Development within the Priority-2030 Program) as well as the state assignment for the Institute of Solid State Chemistry of the Ural Brunch of Russian Academy of Sciences (АААА-А19-119031890025-9)",

year = "2024",

month = mar,

day = "1",

doi = "10.1016/j.ceramint.2023.12.069",

language = "English",

volume = "50",

pages = "7577--7588",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier",

number = "5",

}

RIS

TY - JOUR

T1 - Structural features and photoluminescence of new transparent MgAl2O4 nanoceramics with chromium impurity

AU - Kiryakov, Arseny

AU - Dhanushkodi, Sivaganesh

AU - Bajtimirov, Damir

AU - Kuznetsova, Yulia

AU - Dyachkova, Tatiana

AU - Chufarov, Alexander

AU - Tyutyunnik, Alexander

N1 - The work was supported by the Russian Science Foundation grant No. 23-72-01024, https://rscf.ru/project/23-72-01024/ and from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University Program of Development within the Priority-2030 Program) as well as the state assignment for the Institute of Solid State Chemistry of the Ural Brunch of Russian Academy of Sciences (АААА-А19-119031890025-9)

PY - 2024/3/1

Y1 - 2024/3/1

N2 - Optically transparent nanoceramics MgAl2-xO4:Crx (x = 0.005, 0.00005) were synthesized using a thermobaric pressing technology at different pressures (2 GPa–8 GPa). The structure and morphology as well as paramagnetic and photoluminescent properties of the obtained materials were studied using XRD, SEM, optical absorption, EPR and photoluminescent spectroscopy. It is shown that the applied pressure and the content of impurity chromium affect the type and concentration of defects formed in the structure of ceramics as a result of synthesis. The spectral characteristics of the luminescence and excitation of Cr3+ ions and the peculiarities of their change with varying synthesis modes are determined. Using calculations of electron density distributions, it is point out how the covalent character of Mg–O and Al–O bonds affects the lifetime of Cr3+ luminescence. The obtained results indicate the prospects of MgAl2-xO4:Crx nanoceramics for the development of new light-emitting materials.

AB - Optically transparent nanoceramics MgAl2-xO4:Crx (x = 0.005, 0.00005) were synthesized using a thermobaric pressing technology at different pressures (2 GPa–8 GPa). The structure and morphology as well as paramagnetic and photoluminescent properties of the obtained materials were studied using XRD, SEM, optical absorption, EPR and photoluminescent spectroscopy. It is shown that the applied pressure and the content of impurity chromium affect the type and concentration of defects formed in the structure of ceramics as a result of synthesis. The spectral characteristics of the luminescence and excitation of Cr3+ ions and the peculiarities of their change with varying synthesis modes are determined. Using calculations of electron density distributions, it is point out how the covalent character of Mg–O and Al–O bonds affects the lifetime of Cr3+ luminescence. The obtained results indicate the prospects of MgAl2-xO4:Crx nanoceramics for the development of new light-emitting materials.

UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=001168236100001

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85180320812

U2 - 10.1016/j.ceramint.2023.12.069

DO - 10.1016/j.ceramint.2023.12.069

M3 - Article

VL - 50

SP - 7577

EP - 7588

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

IS - 5

ER -

ID: 54372840