Results 31 to 40 of about 318 (102)

Hidrotermalna sinteza manganita

, 2023
Moderno društvo orijentirano je prema razvoju novih, visokoučinkovitih tehnologija kojima bi se umanjili negativni utjecaji fosilnih goriva na ekologiju i ekonomiju te omogućio daljnji održivi razvoj. Perovskiti, materijali koji od 50-ih godina 20.
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Efectos intergranulares en perovskitas de manganeso nanocristalinas

Boletín de la Sociedad Española de Cerámica y Vidrio, 2000
Intergranular magnetotransport effects are studied on polycrystalline manganites. Reducing grain size through sol-gel technology allows us to show new results on these materials.
Hueso, L. E., Fondado, A., Rivas, J., Rivadulla, F., López-Quintela, M. A   +4 more
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Chemical and thermomechanical compatibility between neodymium manganites and electrolytes based on ceria

Boletín de la Sociedad Española de Cerámica y Vidrio, 2008
The goal of this work was to study the thermal expansion behaviour and to establish the phase relations between NdMe0.5Mn0.5O3 (Me=Ni, Co) solid solutions as cathodes and two electrolytes based on Ce0.9Gd0.1O1.95. Doping of electrolyte with 1.0 wt% Bi2O3
Gil, V., Tartaj, J., Moure, C.
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Transporte eletrônico em manganitas substituídas [PDF]

, 2005
Neste trabalho foi estudado o transporte eletrônico em manganitas substituídas com valência mista através de medidas de resistividade elétrica em função da temperatura, entre 4.2 K e 300 K, com e sem campo aplicado, e magneto-resistência em temperatura ...
Arlei Borba Antunes, Antunes, Arlei Borba   +1 more
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Crystalline structure and electrical properties of Dy_1-XCa_XMnO₃ solid solution

Boletín de la Sociedad Española de Cerámica y Vidrio, 2002
Solid solutions corresponding to the Dy1-xCaXMnO3 system, x=0.0 to 0.60 have been studied. The powders were prepared by solid state reaction of the corresponding oxides and carbonates. Sintered bodies were obtained by firing between 1250 and 1450ºC.
Durán, P., Peña, O., Gutierrez, D., Moure, C.   +3 more
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Preparación y reducción electroquímica de manganitas cinc-litio

, 2016
Se prepararon electrodos policristalinos de manganitas Zn-Li por descomposición térmica de soluciones de nitrato. Los óxidos obtenidos corresponden a dos espinelas, una tetragonal y otra cúbica ZnMn2O4 - LiMn2O4.
Gautier, Juan Luis
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Crystalline structure of the manganites solid solution RE(Me,Mn)O₃, (RE=Gd,Er; Me=Ni,Co)

Boletín de la Sociedad Española de Cerámica y Vidrio, 2009
The structural properties of the manganites solid solution RE(Me,Mn)O₃, RE=Er,Gd, have been studied by X-ray diffraction and electric measurements.
Peña, O., Moure, A., Moure, C., Tartaj, J.   +3 more
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Magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7 [PDF]

, 2014
U ovom radu je istraživana magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7 mjerenjem linearne i nelinearne izmjenične susceptibilnosti na temperaturama izmedu 4.2 K i 400 K, te magnetizacije izmedu 320 K i 500 K. Dokazano je postojanje Griffithsove faze na 370 K, dugodosežnog magnetskog uređenja na 91.2 K, te pojava staklastog ponašanja na ...
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Efeitos da anisotropia do hopping na fase ferromagnética em manganitas dopadas [PDF]

, 2007
As Manganitas, como são conhecidos os óxidos de Manganês, tornaram-se objeto de incontáveis artigos na literatura científica devido ao seu potencial uso em ciência e tecnologia.
Marks, Henrique Salvador Cabral, Henrique Salvador Cabral Marks   +1 more
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GRAPHICAL INTERFACE AS A TOOL IN SIMULATION OF MAGNETIC PROPERTIES OF Re2/3A1/3MnO3 MANGANITES WITH MONTE CARLO METHOD AND HEISENBERG MODEL

Revista Ingenierías Universidad de Medellín, 2013
The graphics interface is useful in specifying and examining chemical structures and physical properties. In this scientific and technological research paper, the SIMMON (MMSP - Manganite magnetic simulation properties) software is presented, as a ...
H. Barco-Ríos, E. Rojas-Calderón, E. Restrepo-Parra   +2 more
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