Technological aspects of Mn-doped MgAl2O4 luminescent spinel ceramics fabricated by arc plasma synthesis method
| Parent link: | Ceramics International.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 51, iss. 24, pt. B.— 2025.— P. 42916-42924 |
|---|---|
| Other Authors: | , , , |
| Summary: | 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 |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://doi.org/10.1016/j.ceramint.2025.07.035 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=684104 |