Mostrar el registro sencillo del ítem
dc.contributor.author
Rodriguez Broggi, Maria Guadalupe
dc.contributor.author
Leyva, Adelma Graciela
dc.contributor.author
Acha, Carlos Enrique
dc.date.available
2019-06-14T13:25:33Z
dc.date.issued
2012-08
dc.identifier.citation
Rodriguez Broggi, Maria Guadalupe; Leyva, Adelma Graciela; Acha, Carlos Enrique; Electrical transport properties of manganite powders under pressure; Elsevier Science; Physica B: Condensed Matter; 407; 16; 8-2012; 3137-3140
dc.identifier.issn
0921-4526
dc.identifier.uri
http://hdl.handle.net/11336/78301
dc.description.abstract
We have measured the electrical resistance of micrometric to nanometric powders of the La5 /8-y PryCa3 /8 MnO3 (LPCMO with y=0.3) manganite for hydrostatic pressures up to 4 kbar. By applying different final thermal treatments to samples synthesized by a microwave assisted denitration process, we obtained two particular grain characteristic dimensions (40 nm and 1000 nm) which allowed us to analyze the grain size sensitivity of the electrical conduction properties of both the metal electrode interface with manganite (Pt/LPCMO) and the intrinsic intergranular interfaces formed by the LPCMO powder, conglomerate under the only effect of external pressure. We also analyzed the effects of pressure on the phase diagram of these powders. Our results indicate that different magnetic phases coexist at low temperatures and that the electrical transport properties are related to the intrinsic interfaces, as we observe evidences of a granular behavior and an electronic transport dominated by the Space Charge limited Current mechanism.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Electronic Transport
dc.subject
Manganites
dc.subject
Nanoparticles
dc.subject
Pressure Effects
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Electrical transport properties of manganite powders under pressure
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-06-04T20:18:13Z
dc.journal.volume
407
dc.journal.number
16
dc.journal.pagination
3137-3140
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Rodriguez Broggi, Maria Guadalupe. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Laboratorio de Física de Bajas Temperaturas; Argentina
dc.description.fil
Fil: Leyva, Adelma Graciela. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Acha, Carlos Enrique. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Laboratorio de Física de Bajas Temperaturas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.journal.title
Physica B: Condensed Matter
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.physb.2011.12.046
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0921452611012397
Archivos asociados