Results 61 to 70 of about 541 (112)

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
doaj  

Estudo do efeito magnetocalórico e barocalórico de sistemas magnéticos baseados em Mn [PDF]

, 2017
In this work we detail the magnetoelastic coupling method in which the elastic term is absorbed by the exchange term allowing it to obtain additional contributions, Sadd, to the total entropy variation, by means of the dependence of the exchange ...
Silva Júnior, José Almeida da
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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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Síntese de pós de LaMnO3 e LaCrO3 dopados com Sr pelo método de combustão: caracterização estrutural e avaliação termodinâmica Synthesis of Sr-doped LaMnO3 and LaCrO3 powders by combustion method: structural characterization and thermodynamic evaluation

Cerâmica, 2012
Manganita de lantânio dopada com estrôncio (LSM) e cromita (LSC) em pó, bem como as correspondentes amostras não dopadas, foram sintetizadas pelo método de combustão, usando dois diferentes combustíveis (ureia e glicina).
A. L. A. da Silva, L. da Conceição, A. M. Rocco, M. M. V. M. Souza   +3 more
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Síntese de nanopartículas magnéticas utilizando métodos solvotérmicos e visando elaboração de fluidos magnéticos aquosos [PDF]

, 2017
Dissertação (mestrado)–Universidade de Brasília, Faculdade UnB de Planaltina, Programa de Pós-Graduação em Ciência de Materiais, 2017.Nanopartículas Magnéticas à base de Manganita de Zinco e de Ferrita de Níquel foram sintetizadas utilizando o método da ...
Lousada, Fabia Faccin Vera
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Estructura cristalina y propiedades de la solución sólida YCo_XMn_1-XO₃

Boletín de la Sociedad Española de Cerámica y Vidrio, 2002
Solid solutions corresponding to the YCoXMn1-XO3 system, x=0.2...0.7 have been studied. The powders were prepared by solid state reaction of the corresponding oxides. Sintered bodies were obtained by firing between 1250 and 1350ºC.
Moure, C., Fernández, J. F., Pena, O., Gutiérrez, D.   +3 more
doaj  

A note on the different crystalline features of the EuMnO₃-based solid solutions as a function of the modifying cation nature

Boletín de la Sociedad Española de Cerámica y Vidrio, 2010
The structural properties of solid solutions based on EuMnO3, in which Eu has been substituted by divalent Ca2+ and Mn by the divalent cation Ni2+ or the variable valence cation Co2+-Co3+ have been studied by X-ray diffraction (XRD) and X-ray absorption ...
Peña, O., Tartaj, J., Moure, A., Moure, C.   +3 more
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Exchange bias en manganitas de La1-xCaxMnO3 dopadas con electrones [PDF]

, 2015
In this work the exchange bias (EB) phenomenon, which is characteristic of systems with diferent magnetic phases in contact, was investigated. A study of manganese oxides of the type La1xCaxMnO3 (LCMO), where x is the calcium (Ca) doping, was performed ...
Pérez de la Vega, Camilo Rafael
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Magnetic behavior of solid solutions REMe_0.50Mn_0.50O₃ (RE = Y, La, Pr, Nd, Eu, Gd, Er ; Me = Ni,Co)

Boletín de la Sociedad Española de Cerámica y Vidrio, 2008
Partial substitution of Mn by a divalent metal in rare-earth manganites REMexMn1 xO3 results in the simultaneous presence of Mn3+ and Mn4+. The RE sublattice has its own properties and can interact with the local field imposed by the ferromagnetic Mn ...
Tartaj, J., Gil, V., Barahona, P., Peña, O., Moure, C.   +4 more
doaj  

Simulación Monte Carlo de propiedades magnéticas y de transporte en sistemas de superredes del tipo (FM/AFM)n [PDF]

, 2010
En este documento de tesis doctoral se presentan los resultados de simulaciones computacionales empleando el método Monte Carlo y el modelo de Heisenberg clásico, para el estudio de propiedades magnéticas y de transporte de manganitas de tipo perovskita.
Restrepo Parra, Elisabeth
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