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Examinando INFORMES por Autor "Alascio, B. R."
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Ítem Acceso Abierto Comments on electronic phase transition inb Ce1XLax alloys(Instituto de Física "Dr. José A. Balseiro". Universidad Nacional de Cuyo, 1972) Alascio, B. R.; López, A.; Olmedo, C. F. EIt is show tha the Ramírez-Falicov model for the e-y transition in Ce, in it present form, fails to account for the experiments on Ce1-x Lax. The results is in disagreement with a recent work by Ramírez and Kiwi published in this journal.Ítem Acceso Abierto Effect af rare earth impurities on the α - γ transition in metallic Ce(Instituto de Física "Dr. José A. Balseiro". Universidad Nacional de Cuyo, 1971) Alascio, B. R.; López, A.; Olmedo. C. F. EThe model of Ramirez and Falicov for α - γ transitions in pure Ce has been extended to describe Ce-rare earth dillute alloys. Predictions of changes in the transition temperatures and pressures are in good agreement with existing experiments.Ítem Acceso Abierto Effect of Th impurities on the α - γ transition in metallic Ce(Instituto de Física "Dr. José A. Balseiro". Universidad Nacional de Cuyo, 1971) Alascio, B. R.; López, A.The model of Ramirez and Falicov for α - γ transition in Ce has been extended to the Ce-Th system. Convenient approximations give simple relations between transition temperatures and pressures and the parameters of the model. Comparison with experiments is made.Ítem Acceso Abierto Electronic phase transition in Ce1-X Lax alloys(Instituto de Física "Dr. José A. Balseiro". Universidad Nacional de Cuyo, 1972) Alascio, B. R.; López, A.; Olmedo, C. F. EAn extension of the Ramírez-Falicov theory of the alpha-gama transition in Ce is given, which accounts for the effect of rare earth impurities, particularly La.Ítem Acceso Abierto Theory of the effect of impurities on the a-y transition in cerium(Instituto de Física "Dr. José A. Balseiro". Universidad Nacional de Cuyo, 1972) Alascio, B. R.; López, A.; Olmedo, C. F. E.The Ramirez-Falicov model for the a-y transition in the Ce-rare earths dilute alloys. Changes in the transition temperatures and pressures predicted by the model, are in good agreement with existing experiments. The most important effect of the impurities is to lower the transition temperature, the effect being more marked for divalent impurities, the assumption that in this way an ordering (Néel) temperature can be reached, leads to the prediction of a phase diagram for these alloys similar to that found for Cr doped V2O3.