B. Lepine
University of Bordeaux
8 Papers
147 Citations
B. Lepine is an academic researcher from University of Bordeaux. The author has contributed to research in topics: Oxide & Orthorhombic crystal system. The author has an hindex of 6, co-authored 8 publications.
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Papers
Stabilization of a new superconducting phase by low temperature fluorination of La2CuO4
B. Chevalier,Alain Tressaud,B. Lepine,K. Amine,Jean-Michel Dance,L. Lozano,E. Hickey,J. Etourneau +7 more
TL;DR: In this article, the X-ray diffraction pattern of the resulting product is characteristic of a new single phase derived from the K 2 NiF 4 -type structure, and an enhancement of the orthorhombic distortion relative to the starting oxide is observed with: a = 5.342 A; b = 5,436 A; and c = 13.192 A.
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Passivation process of high T c superconductors YBa 2 Cu 3 O 7-δ by fluorine gas treatment
Alain Tressaud,Bernard Chevalier,B. Lepine,Jean-Michel Dance,L. Lozano,Jean Grannec,Jean Etourneau,Robert Tournier,André Sulpice,Pascal Lejay +9 more
TL;DR: In this article, a thin layer of amorphous fluorides (and/or oxyfluorides) is formed at the surface of the particles, which passivates the material against hydrolysis and gas exchange processes.
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Influence of fluorine-gas treatment on the structural and physical properties of La2CuO4
TL;DR: In this paper, the La2CuO4 starting oxide is treated with pure fluorine gas at temperatures ranging from 20 °C to 300 °C and the resulting product crystallizes in an orthorhombic distortion of the K2NiF4-type structure.
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New series of compounds Bi2ALaCuO6.5 (A=Ca, Sr or Ba) isostructural to the superconducting phase Bi2Sr2CuO6
TL;DR: In this article, a series of compounds with the general formula Bi2ALaCuO6.5 with A = Ca, Sr or Ba isostructural to the n = 1 member sets the problem to exact localization of the oxygen atoms in the sub-lattice.
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Magnetic ordering in the ternary germanides U2Co3Ge5 and UCo2Ge2
E. Hickey,Bernard Chevalier,B. Lepine,Jean Etourneau,M. Antonia Frey Ramos,J. Ferreira da Silva,M. Manuela Amado,J. B. Sousa +7 more
TL;DR: In this paper, the authors investigated the UCo2xGe2+x, system for −0.2x0.5 and proposed an explanation for the ambivalence in the literature concerning the structural and physical properties of this last germanide.
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