Luminescence analysis and subsequent revision of the crystal structure of triclinic L-EuBO3 - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Journal of Alloys and Compounds Year : 1999

Luminescence analysis and subsequent revision of the crystal structure of triclinic L-EuBO3

Abstract

The structure of L-EuBO3 is revised by using the centric P-1 space group with two crystallographic sites for Eu3+, in perfect agreement with the luminescence results (site A and site B). The structure, refined from single crystal X-ray diffraction data, is triclinic, space group P-1, Z=4, with a=6.468(7) Å, b=6.477(7) Å, c=6.220(7) Å, α=107.78(6)°, β=108.00(7)°, γ=93.07(4)°, R1=0.025, wR2=0.062. The three-dimensional network is built up from corrugated sheets of EuO8 polyhedra, approximately parallel to the (1̄1̄1) planes. Luminescence analysis indicates that site to site energy transfer is efficient at 77 K and is phonon assisted from site B to site A. At 12 K, this site B to site A phonon coupling disappears.

Dates and versions

in2p3-00003762 , version 1 (10-01-2000)

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Cite

G. Corbel, M. Leblanc, E. Antic Fidancev, M. Lemaitre Blaise, J-C. Krupa. Luminescence analysis and subsequent revision of the crystal structure of triclinic L-EuBO3. Journal of Alloys and Compounds, 1999, 287 (1-2), pp.71-78. ⟨10.1016/S0925-8388(99)00023-7⟩. ⟨in2p3-00003762⟩
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