Mostrar el registro sencillo del ítem
dc.contributor.author
Lima, Enio Junior
dc.contributor.author
Brito, Giancarlo E. S.
dc.contributor.author
Cavelius, Christian
dc.contributor.author
Sivakov, Vladimir
dc.contributor.author
Shen, Hao
dc.contributor.author
Mathur, Sanjay
dc.contributor.author
Goya, Gerardo Fabian
dc.date.available
2023-05-24T16:36:36Z
dc.date.issued
2012-12
dc.identifier.citation
Lima, Enio Junior; Brito, Giancarlo E. S.; Cavelius, Christian; Sivakov, Vladimir; Shen, Hao; et al.; Influence of the substrate and precursor on the magnetic and magneto-transport properties in magnetite films; Bentham Science Publishers; Current Nanoscience; 8; 5; 12-2012; 659-668
dc.identifier.issn
1573-4137
dc.identifier.uri
http://hdl.handle.net/11336/198630
dc.description.abstract
We have investigated the magnetic and transport properties of nanoscaled Fe3O4 films obtained from Chemical Vapor Deposition (CVD) technique using [FeIIFe2III(OBut)8] and [Fe2III(OBut)6] precursors. Samples were deposited on different substrates (i.e., MgO (001), MgAl2O4 (001) and Al2O3 (0001)) with thicknesses varying from 50 to 350 nm. Atomic Force Microscopy analysis indicated a granular nature of the samples, irrespective of the synthesis conditions (precursor and deposition temperature, Tpre) and substrate. Despite the similar morphology of the films, magnetic and transport properties were found to depend on the precursor used for deposition. Using [FeIIFe2III(OBut)8] as precursor resulted in lower resistivity, higher MS and a sharper magnetization decrease at the Verwey transition (TV). The temperature dependence of resistivity was found to depend on the precursor and Tpre. We found that the transport is dominated by the density of antiferromagnetic antiphase boundaries (AF-APB?s) when [FeIIFe2III(OBut)8] precursor and Tpre = 363 K are used. On the other hand, grain boundary-scattering seems to be the main mechanism when [Fe2III(OBut)6] is used. The Magnetoresistance (MR(H)) displayed an approximate linear behavior in the high field regime ( H > 796 kA/m), with a maximum value at room-temperature of ~ 2-3 % for H = 1592 kA/m, irrespective from the transport mechanism.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Bentham Science Publishers
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ANTI-PHASE BOUNDARIES
dc.subject
CHEMICAL VAPOR DEPOSITION
dc.subject
MAGNETITE FILMS
dc.subject
MAGNETORESISTANCE
dc.subject.classification
Otras Nanotecnología
dc.subject.classification
Nanotecnología
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Influence of the substrate and precursor on the magnetic and magneto-transport properties in magnetite films
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-05-24T14:25:03Z
dc.journal.volume
8
dc.journal.number
5
dc.journal.pagination
659-668
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Oak Park
dc.description.fil
Fil: Lima, Enio Junior. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
dc.description.fil
Fil: Brito, Giancarlo E. S.. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Cavelius, Christian. No especifíca;
dc.description.fil
Fil: Sivakov, Vladimir. No especifíca;
dc.description.fil
Fil: Shen, Hao. No especifíca;
dc.description.fil
Fil: Mathur, Sanjay. No especifíca;
dc.description.fil
Fil: Goya, Gerardo Fabian. Universidad de Zaragoza; España
dc.journal.title
Current Nanoscience
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://benthamscience.com/article/45699
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.2174/157341312802884544
Archivos asociados