Results 1 to 10 of about 30 (30)
Magnetorresistência colossal em La5/8-yPr yCa3/8MnO3 Magnetoresistance in La5/8-yPr yCa3/8MnO3
Amostras policristalinas de La5/8-yPr yCa3/8MnO3, 0 0,35) revelam um efeito de magnetorresistência colossal amplificado devido à coexistência e competição das FMM e OCI cujas frações volumétricas podem ser alteradas via mudança da temperatura e ...
S. H. Masunaga, R. F. Jardim
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Las interfaces gráficas son útiles para especificar y examinar estructuras químicasy propiedades físicas de materiales. En este artículo se presenta el software SIMMON (Simulación de propiedades magnéticas de manganitas) como un programa de visualización
H. Barco-Ríos +2 more
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En este trabajo se presenta un estudio de algunas propiedades de magnetotransporte de bicapas de manganitas ferromagnéticas/antiferromagnéticas (FM/AF) de La 2/3 Ca 1/3 MnO 3 / La 1/3 Ca 2/3 MnO 3 .
Elisabeth Restrepo Parra +2 more
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Propiedades físicas de estructuras tipo perovskita: Síntesis y aplicaciones
Los materiales tipo perovskita han despertado gran interés dada la flexibilidad que poseen para acomodar elementos de diferentes radios iónicos, permitiéndoles ser estable.
Carlos Ramírez-Martín +3 more
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Aquí presentamos un estudio de las propiedades magnéticas de la manganita Pr0.5Sr0.5-xCaxMnO3 para x=0.1 y 0.2, donde se presenta la coexistencia entre las fases ferromagnética (FM) y antiferromagnética (AFM).
Darío G. Niebieskikwiat +1 more
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We report a structural study on polycrystalline La0.86Sr0.14Mn1-y Cu yO3+delta samples (y = 0, 0.05, 0.10, 0.15, 0.20) using refinement of powder X-ray diffraction data and analysis of scanning electron microscopy images.
Rodolfo Araujo Victor +2 more
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Dielectric behavior of La1-xCaxMnO3 (0.4 ≤ x ≤ 0.5)
In this work the dielectric behavior of semiconducting La-manganites in an intermediate Ca-doping regime is studied. Ceramic samples were prepared by conventional solid-state reaction, using elemental oxides as starting reactants.
Fondado, A. +7 more
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Estudio Mössbauer para el sistema La0.7M0.3Mn1-xFexO3-y (M = Pb, Sr, 0.01 ≤ X ≤ 0.3)
On cooling the compounds of the form La1-xMxMnO3-y (where M is divalent cation) show a large decrease in resistivity associated with a paramagnetic to ferromagnetic transition.
Rojo, T. +3 more
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Magnetoelectric phenomena in single-phase and composite systems
In the present review, the main phenomenology and problematic related some of the most interesting magnetoelectric systems (materials having in the same phase magnetic and ferroelectric order and interaction between them, giving rise to the ...
Mitoseriu, Liliana
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Investigating ferromagnetism and charge order in Bi1-xSrxMnO3 (x﹤0.3) ceramic oxides
The possible coexistence of ferromagnetism and charge/orbital order in Bi3/4Sr1/4MnO3 has been investigated. The manganite Bi0.75Sr0.25MnO3, with commensurate charge balance, undergoes an electronic transition at TCO~600 K that produces a longrange ...
Calleja, A. +6 more
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