Affiliation:
1. Department of Physics , Civil Aviation Flight University of China , Guanghan 618307 , PR China
Abstract
Abstract
A complete formula consisting of the static factor stemming from lattice thermal expansion and the dynamic factor owing to electron-phonon interaction is employed to investigate the thermal shift at near and higher than room temperature for the 7
D0⟶5F0
fluorescence line in strontium tetraborate (SrB4O7):Sm2+ crystal. The static factor is gained in terms of the pressure dependence of the fluorescence line. With the aid of an approximate processing, the static parameter A (characterising the static factor) and the electron-phonon coupling parameter α
’ (characterising the dynamic factor) are estimated even if there is no observed thermal shift curve from low temperature (<30 K) to near and higher than room temperature. The static factor and dynamic one in SrB4O7:Sm2+ crystal give rise to the thermal blue shift and red shift, respectively, and the total or observed thermal shift is due to the emulation between the two factors. The static factor in shift direction is contrary to and in magnitude is slightly greater than the dynamic one for the 7
D0⟶5F0
line in SrB4O7:Sm2+ crystal. Thus, the observed very small thermal blue shift (which is not explained up to now) for the studied line in SrB4O7:Sm2+ crystal is rationally explained.
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics
Reference28 articles.
1. Y. S. Oseledchik, A. L. Prosvirnin, A. I. Pisarevskiy, V. V. Starshenko, V. V. Osadchuk, et al., Opt. Mater. 4, 669 (1995).
2. V. Petrov, F. Noach, D. Shen, F. Pan, G. Shen, et al., Opt. Lett. 29, 373 (2004).
3. C. Kulshreshtha, S. H. Cho, Y. S. Jung, and K. S. Sohn, J. Electrochem. Soc. 154, J86 (2007).
4. J. Y. Sun, J. C. Zhu, X. T. Liu, and H. Y. Du, J. Rare Earths 30, 1084 (2012).
5. F. Datchi, R. Letoullec, and P. Loubeyre, J. Appl. Phys. 81, 5333 (1997).
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献