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- W2003360019 abstract "New solid solutions with pyrochlore structure have been evidenced in the two binary systems Y 2 Ti 2 O 7 — Fe 2 TiO 5 et Eu 2 Ti 2 O 7 — Fe 2 TiO 5 . The domain of composition of the solid solutions was defined by X-ray diffraction, 0–33 and 0–40% (Fe 2 TiO 5 ), respectively, for Y 2 Ti 2 O 7 et Eu 2 Ti 2 O 7 . The space group of the solid solutions is Fd3m. A contraction of the cubic cell parameters is observed for the two solid solutions which are non-stoichiometric. Deux nouvelles solutions solides ont été mises en évidence dans les systèmes binaires Y 2 Ti 2 O 7 — Fe 2 TiO 5 et Eu 2 Ti 2 O 7 — Fe 2 TiO 5 . L'étude de la variation du paramètre a de la maille en fonction de la composition a permis de préciser la composition limite du domaine de stabilité de la solution solide (33 et 40% en Fe 2 TiO 5 respectivement pour Y 2 Ti 2 O 7 et Eu 2 Ti 2 O 7 .). Ces solutions solides sont non-stoechiométriques. L'étude radiocristallographique montre que leur structure présente une forte analogie avec les structures pyrochlores cubiques A 2 Ti 2 O 7 (A = Y ou Eu) et possède une symétrie cubique de groupe d'espace Fd3m." @default.
- W2003360019 created "2016-06-24" @default.
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- W2003360019 date "2000-07-01" @default.
- W2003360019 modified "2023-09-26" @default.
- W2003360019 title "Synth�se et �tude radiocristallographique de nouvelles solutions solides (1?x)ATiO?xFeTiO (A = Eu, Y)" @default.
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- W2003360019 doi "https://doi.org/10.1016/s0151-9107(00)80013-6" @default.
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