Technological aspects of Mn-doped MgAl2O4 luminescent spinel ceramics fabricated by arc plasma synthesis method

Technological aspects of Mn-doped MgAl2O4 luminescent spinel ceramics fabricated by arc plasma synthesis method

Dades bibliogràfiques
Parent link:Ceramics International.— .— Amsterdam: Elsevier Science Publishing Company Inc.
Vol. 51, iss. 24, pt. B.— 2025.— P. 42916-42924
Altres autors: Valiev D. T. Damir Talgatovich, Shekhovtsov V. V. Valentin Valerjevich, Sharafeev Sh. M. Sharif Mnirovich, Stepanov S. A. Sergey Aleksandrovich
Sumari:The present work is a study of Mn-doped MgAl2O4 luminescent ceramics fabricated by arc plasma synthesis. As a result, polycrystalline materials with a narrow “green” emission band (λmax = 520 nm, FWHM ∼32 nm) and high photoluminescence efficiency (up to 7.2 %) were obtained. It was found that the optimal synthesis parameters (current 140 A, time 60 s, supplied energy ∼850 kJ) provide a uniform distribution of Mn2+ in the tetrahedral positions of the spinel, while excess energy leads to degradation of the luminescent centers. X-ray phase and Raman analyses confirmed the formation of a pure spinel phase with a high degree of cationic disorder. An inverse correlation was found between the green luminescence of Mn2+ (λem = 520 nm) and the weak infrared radiation (λem = 760 nm). The possible nature of emission properties of Mn-doped MgAl2O4 ceramics was discussed in detail
Текстовый файл
AM_Agreement
Publicat: 2025
Matèries:
MgAl2O4 spinel ceramics
Thermal plasma
Synthesis technique
Photoluminescence
труды учёных ТПУ
электронный ресурс
Accés en línia:https://doi.org/10.1016/j.ceramint.2025.07.035
Format: Electrònic Capítol de llibre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=684104

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