The flourescence spectrum of chrysoberyl BeAl2O4:Cr3+ at high pressure and low temperature
1988; Elsevier BV; Volume: 40-41; Linguagem: Inglês
10.1016/0022-2313(88)90262-1
ISSN1872-7883
AutoresJingqing Liu, Ruming Tang, Yanyun Wang, Weiyi Jia, Yusheng Shang, Shouan He,
Tópico(s)Photochemistry and Electron Transfer Studies
ResumoAbstract The variation in the spectral position of the fluorescent 2E-4A2 transition lines at high pressure and low temperature is studied. Two sharp lines from the Cr ions in the mirror sites named as R1, R2 and two others from those in the inverse sites named as S1, S2 have different red shift rate with pressure. When the temperature is decreased from 300K to 77K, all R lines and S lines shift to the blue more than 10cm-1. A rough estimate indicates that it has to take account of lattice relaxation and crystal field modification, in order to completely explain the shifts in both two cases.
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