Pressure-dependent fluorescence studies of Sm3+-doped fluorophosphate glass

• Published in: High pressure research Vol. 31; no. 1; pp. 121 - 125
• Main Authors: Basavapoornima, Ch, Jayasankar, C. K., Tröster, Th, Sievers, W., Wortmann, G.
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 01-03-2011
• Subjects: Aluminum; Center of gravity; Decay; Doppler effect; energy transfer; Glass; glasses; Lithium borates; Luminescence; luminescence properties; Phosphates; Spectra
• ISSN: 0895-7959; 1477-2299
• DOI: 10.1080/08957959.2010.530265

Pressure-induced luminescence spectra and decay curves for the
4
G
5/2
level of Sm
3+
ions in fluorophosphate glass (PKFBASm 40:54 P
2
O
5
+14 K
2
O+13 BaO+6 KF+9 Al
2
O
3
+4 Sm
2
O
3
) have been measured as a function of pressure up to 36.3 GPa at room temperature. In this pressure range, a red shift of barycenter and Stark level splittings are observed for the
4
G
5/2
→
6
H
J
(J=9/2, 7/2 and 5/2) multiplet transitions. The decay curves of the
4
G
5/2
level show non-exponential behavior in the entire pressure range, which has been explained by energy transfer due to the dipole-dipole interaction. The effect of releasing pressure on the luminescence spectra and decay curves has also been studied. The results obtained for this glass have been compared with Sm
3+
-doped fluorophosphate, phosphate, lead phosphate, lithium borate and tellurite glasses.