2024-03-28T20:37:47Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/948242019-03-19T13:18:52Zcom_10261_89com_10261_3com_10261_36com_10261_4col_10261_342col_10261_289
DIGITAL.CSIC
author
Ruano Díaz, Manuel
author
Díaz Muñoz, Marcos
author
Martínez-Orellana, Lidia
author
Navarro, Elena
author
Román García, Elisa Leonor
author
García-Hernández, M.
author
Espinosa, A.
author
Ballesteros Pérez, Carmen Inés
author
Fermento, Rui
author
Huttel, Yves
funder
Ministerio de Economía y Competitividad (España)
funder
Comunidad de Madrid
funder
European Commission
2014-04-03T07:54:35Z
2014-04-03T07:54:35Z
2013
Physical Chemistry Chemical Physics 15(1): 316-329 (2013)
http://hdl.handle.net/10261/94824
10.1039/C2CP42769A
http://dx.doi.org/10.13039/501100003329http://dx.doi.org/10.13039/501100000780http://dx.doi.org/10.13039/100012818
The study of the magnetic properties of Co nanoparticles (with an average diameter of 10.3 nm) grown using a gas-phase aggregation source and embedded in Au and V matrices is presented. We investigate how the matrix, the number of embedded nanoparticles (counted by coverage percentage), the interparticle interactions and the complex nanoparticles/matrix interface structure define the magnetic properties of the studied systems. A threshold coverage of 3.5% of a monolayer was found in both studied systems: below this coverage, nanoparticles behave as an assembly of independent single-domain magnetic entities with uniaxial anisotropy. Above the threshold it is found that the magnetic behavior of the systems is more matrix dependent. While magnetic relaxation and Henkel plots measurements stress the importance of the dipolar interactions and the formation of coherent clusters in the case of the Au matrix, the magnetic behavior of cobalt clusters embedded in the vanadium matrix is explained through the formation of a spin glass-like state at the V-Co interface that screens the magnetic interactions between NPs. © the Owner Societies 2013.
eng
closedAccess
Matrix and interaction effects on the magnetic properties of Co nanoparticles embedded in gold and vanadium
artículo
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URL
https://digital.csic.es/bitstream/10261/94824/1/accesoRestringido.pdf
File
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accesoRestringido.pdf
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https://digital.csic.es/bitstream/10261/94824/5/accesoRestringido.pdf.txt
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accesoRestringido.pdf.txt