Spectroscopic properties of Mn4+ ions in SrLaAlO4
2013; Elsevier BV; Volume: 35; Issue: 9 Linguagem: Inglês
10.1016/j.optmat.2013.04.028
ISSN1873-1252
AutoresYa. Zhydachevskii, A. Suchocki, A. Pajączkowska, A. Kłos, A. Szysiak, A. Reszka,
Tópico(s)Microwave Dielectric Ceramics Synthesis
ResumoSpectroscopic study of Mn4+ ions in SrLaAlO4 has been performed in the 5–500 K temperature range. The photoluminescence of Mn4+ ions around 714 nm originates from the 2E → 4A2 transition. The energy distance between the 2E and 4T2 levels is about 2500 cm−1. The Mn4+ emission in SrLaAlO4 undergoes rapid thermal quenching already above 250 K that can be caused by intrinsic point defects of the host having energy levels overlapping with the 4T2 level of Mn4+ ions.
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