Results 111 to 120 of about 1,911 (147)

Magnetic properties of Aurivillius lanthanide-bismuth (LnFeO3)nBi4Ti3O12 (n = 1,2) layered titanates

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2008
Bismuth titanates of Aurivillius layer-structure (BiFeO3)nBi4Ti3O12, are of great technological interest because of their applications as non-volatile ferroelectric memories and high-temperature piezoelectric materials. The synthesis and crystallographic
Tartaj, J.   +4 more
doaj  

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

open access: yesBoletín 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.   +3 more
doaj  

Fuerza foto-electromotriz en películas de perovskita

open access: yes, 2019
En esta tesis se utiliza la técnica de fuerza foto-electromotriz para realizar la caracterización fotoeléctrica de películas delgadas de perovskita (CH₃NH₃PbI₃: MAPI) y en base a los resultados se propone un mecanismo de transporte de portadores de carga.
openaire   +1 more source

Spark plasma sintering of hydrothermally derived ultrafine Ca doped lanthanum chromite powders

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2006
Lanthanum chromite nano-particles, with a composition of La0.9Ca0.1CrO3 and La0.8Ca0.2CrO3, were produced by 1 h of hydrothermal reaction at 400 and 425°C respectively.
Rendón-Angeles, J. C.   +6 more
doaj  

Crystalline behaviour and electrical properties of manganese perovskites substituted on A or B sites: ErMnO<sub>3</sub> modified by Ca and EuMnO<sub>3</sub> modified by Co

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2010
The structural and electrical features of the manganites solid solutions (Er,Ca)MnO<sub>3</sub> and Eu(Co,Mn)O<sub>3</sub>, have been studied by X-ray diffraction and conductivity measurements. Powders were prepared by solid-state
Tartaj, J.   +3 more
doaj  

Cálculos de Estructura Electrónica en Perovskitas BiFeO3 y YCrO3

open access: yes, 2019
Se estudia la estructura electrónica de las perovskitas BiFeO3 y YCrO3. Para el BiFeO3 se utilizaron los arreglos antiferromagnéticos tipo A y G. Y para el YCrO3 los arreglos antiferromagnéticos tipo A, C y G. Se utilizó la teoría del funcional de densidad implementada en el paquete Quantum ESPRESSO y pseudopotenciales ultrasuaves junto a la ...
openaire   +1 more source

DINÂMICA ULTRARRÁPIDA DE ELÉTRONS EM PEROVSKITAS ORGANOMETÁLICAS

open access: yesAnais do Congresso de Iniciação Científica da Unicamp, 2017
HENRIQUE BROLEZI NUNCIARONI   +1 more
openaire   +2 more sources

Absence of Anomalous Electron-Phonon Coupling in the Near-Ambient Gap Temperature Renormalization of CsPbBr<sub>3</sub> Nanocrystals. [PDF]

open access: yesJ Phys Chem C Nanomater Interfaces
Fasahat S   +7 more
europepmc   +1 more source

Sign of the Gap Temperature Dependence in CsPb(Br,Cl)<sub>3</sub> Nanocrystals Determined by Cs-Rattler-Mediated Electron-Phonon Coupling. [PDF]

open access: yesJ Phys Chem Lett
Fasahat S   +7 more
europepmc   +1 more source

Anisotropia inducida por campo magnético en perovskitas de cobalto

open access: yes, 2001
En este trabajo se examina la anisotropía magnética de la perovskita de cobalto Lao.7Sro.3Co03, material de alto interés tecnológico. Las medidas convencionales, hechas en la zona de alto campo, arrojan un valor de anisotropía magnética muy elevado, que contrasta con los bajos valores de campo coercitivo medidos en los ciclos de ...
Mira Pérez, Jorge   +2 more
openaire   +1 more source

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