Results 41 to 50 of about 80 (75)

Estabilidad térmica de manganitas tipo La1-xCaxMnO3 obtenidas mediante mecanosíntesis

, 2009
Manganitas de Lantano, Mecanosíntesis, Estabilidad Térmica, Estructura Cristalina, Energía de Activación.
I. A. Lira Hernández, A.M. Bolarín Miró, F. Sánchez De Jesús, C.A. Cortés Escobedo   +3 more
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INFLUENCE OF BALL MILLING PROCESS ON STRUCTURAL AND MAGNETIC PROPERTIES OF La0.7Sr0.3MnO3 MANGANITE

Revista EIA
This investigation presents the magnetic and structural properties of ferromagnetic manganite La0.7Sr0.3MnO3, (LSMO), subjected to ball milling processes. The LSMO powder sample was obtained by solid state reaction from high purity precursors. From X-ray
Gloria Campillo Figueroa, Óscar Arnache Olmos, Andrés Gil Garcés, Jaime Alberto Osorio Vélez, Jailes Joaquín Beltrán, Eval Baca Miranda, Roberto Castillo   +6 more
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Efecto de los parámetros de procesamiento sobre las características cristalinas de la solución sólida Y(Co_xMn_1-x)O₃, x=0.6, 0.7

Boletín de la Sociedad Española de Cerámica y Vidrio, 2002
The preparation and crystalline features of perovskite solid solution Y(CoxMn1-x)O3, x=0.6, 0.7, belonging to the Co-rich region of the pseudobinary system YMnO3-YCoO3 have been studied. Dilatometric essays performed under different atmospheres have been
Fernández, J. F., Gutiérrez, D., Moure, C., Pena, O.   +3 more
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Kemijska sinteza stroncijeva i lantanova manganita

, 2020
U ovom radu istraživane su dvije metode sinteze stroncijeva manganita i lantanova manganita dopiranog stroncijem. Stroncijev manganit sintetiziran je limunskim postupkom i koprecipitacijom, a kao izvor metalnih kationa korišteni su stroncijev karbonat i manganov (II) nitrat tetrahidrat.
openaire   +2 more sources

MAGNETORRESISTENCIA COLOSAL EN MANGANITAS DEL TIPO La1_xDxMnO3 CON D= Ba, Ca

Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales
Se prepararon manganitas perovskitas del tipo La₀.₆₇Ca₀.₃₃MnO₃ y La₀.₆₇Ba₀.₃₃MnO₃ por reacción de estado sólido. Estas muestras se caracterizaron eléctrica, magnética y estructuralmente y se estudió el efecto que diferentes rutinas de preparación tienen sobre estas propiedades.
R. Jiménez, A. Mariño, H. Sánchez
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Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sites

Boletín de la Sociedad Española de Cerámica y Vidrio, 1999
The phase transition to perovskite-type structure, that occurs in some hexagonal manganites when foreign cations are incorporated into solid solution, has been studied. Several solid solution series belonging to the Y(Mn, Ni)O3, (Er, Ca)MnO3, (Y, Ca)MnO3,
Moure, C., Gutiérrez, D., Fernández, J. F., Tartaj, J., Durán, P., Pena, O.   +5 more
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Utjecaj reaktanata na pripremu manganita reakcijom u čvrstom stanju

, 2021
The purpose of this work was to synthesize compounds of strontium manganite (SrMnO3), lanthanum manganite (LaMnO3), and barium manganite (BaMnO3) by solid-state reaction using two structurally distinct manganese (IV) oxides and therefore examine the influence of reactants on the synthesis. The obtained products were calcined at temperatures of 1000 and
openaire   +2 more sources

Crystalline behaviour and electrical properties of manganese perovskites substituted on A or B sites: ErMnO₃ modified by Ca and EuMnO₃ modified by Co

Boletín de la Sociedad Española de Cerámica y Vidrio, 2010
The structural and electrical features of the manganites solid solutions (Er,Ca)MnO₃ and Eu(Co,Mn)O₃, have been studied by X-ray diffraction and conductivity measurements. Powders were prepared by solid-state
Tartaj, J., Moure, A., Peña, O., Moure, C.   +3 more
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Crystalline structure and electrical properties of solid solutions YNi_xMn_1-xO₃

Boletín de la Sociedad Española de Cerámica y Vidrio, 1999
Solid solutions belonging to the Mn-rich region of the YNiXMn1-XO3 system have been studied. The powders were prepared by solid state reaction between the corresponding oxides. Sintered ceramics were obtained by firing at 1325-1350ºC.
Moure, C., Durán, P., Fernández, J. F., Gutiérrez, D.   +3 more
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Estructura cristalina y propiedades eléctricas de soluciones sólidas YCu_xMn_1-xO₃

Boletín de la Sociedad Española de Cerámica y Vidrio, 2001
Solid solutions belonging to the Mn-rich region of the YCuxMn1-xO3 system have been studied. The powders were prepared by solid-state reaction between the corresponding oxides. Sintered ceramics were obtained by firing at 1100−1200 ºC.
Peña, O., Fernández, J. F., Moure, C., Gutiérrez, D.   +3 more
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