UNIGE document Scientific Article
previous document  unige:3533  next document
add to browser collection

Europium doped BaMgF4, an EPR and optical investigation

Rey, Julien M.
Published in Journal of Alloys and Compounds. 1998, vol. 268, no. 4, p. 60-65
Abstract Eu2+ was introduced into pure and oxygen codoped BaMgF4 single crystals. A detailed EPR study of this ion (S=7/2) was realized on both types of systems. The result is that only one spectrum was observed involving a strong crystal field. The associated site symmetry of the impurity is Cs. It occupies very closely a Barium lattice site as was established by correlating the EPR results with those of a refined X-ray structure analysis on a Ba0.8Eu0.2MgF4 single crystal realized in our laboratory. The oxygen codoped crystals exhibited this same Eu2+ EPR spectrum (the only one). Optical emission and excitation experiments were performed between 13 000 and 53 000 cm−1. The results due to the Eu2+ impurity are given and discussed qualitatively within the 4f7left right double arrow4f65d1 scheme.
Keywords EPRLuminescenceBaMgF4Hydrolysis
Full text
Research group Groupe Bill
(ISO format)
REY, Julien M. et al. Europium doped BaMgF4, an EPR and optical investigation. In: Journal of Alloys and Compounds, 1998, vol. 268, n° 4, p. 60-65. https://archive-ouverte.unige.ch/unige:3533

250 hits



Deposited on : 2009-10-02

Export document
Format :
Citation style :