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[5]D0 → [7]F0 transitions of Sm[2+] in SrMgF[4]:Sm[2+]

Gingl, Franz
Published in Journal of Alloys and Compounds. 2004, vol. 374, no. 1-2, p. 194-196
Abstract Temperature-dependent emission spectra of Sm[2+]-doped SrMgF4 have been obtained in the temperature range from 50 to 300 K. At 50 K, six bands are observed for the very strong [5]D0→[7]F0 transition, in agreement with the reported sixfold crystal superstructure. The overall splitting of more than 70 cm[−1] highlights the important structural differences of the six Sr sites. Upon heating progressively to room temperature, the spectra change progressively with a more pronounced change between 270 and 300 K. These observations suggest the possibility of a complex structural behavior for SrMgF[4] which will require new experiments.
Keywords Alkaline earth fluoridesSamariumF-f TransitionsLuminescence spectroscopyCrystal structure
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Research groups Groupe Hagemann
Groupe Bill
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HAGEMANN, Hans-Rudolf et al. [5]D0 → [7]F0 transitions of Sm[2+] in SrMgF[4]:Sm[2+]. In: Journal of Alloys and Compounds, 2004, vol. 374, n° 1-2, p. 194-196. https://archive-ouverte.unige.ch/unige:3519

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Deposited on : 2009-10-02

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