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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/53591

Title: Negative thermal expansion in nanostructured intermediate valence YbAl3
Author(s): Echevarría Bonet, Cristina
Fuente Rodríguez, Maríz de la
Espeso, José Ignacio
Blanco Rodríguez, Jesús Ángel
Puente Orench, Inés
Rojas Pupo, Daniel
Rodríguez Fernández, Lidia
Fauth, Francois
Fernández Barquín, Luis
Keywords: nanopartículas
magnetismo
expansión térmica
Issue date: 18-Sep-2019
Publisher: IEEE
Publisher version: https://doi.org/10.1109/LMAG.2019.2942262
Citation: IEEE Magnetics Letters, 10, p. 6106205- (2019); doi:10.1109/LMAG.2019.2942262
Format extent: p. 6106205-
Abstract: Interest in the strongly correlated electron system YbAl 3 has been recently renewed by the observation of a breakdown of coherence effects and Fermi liquid behavior when the alloy's particle size is reduced to around 11 nm. Powder diffraction measurements using neutron and synchrotron radiation allow us to estimate the thermal expansion of the nanostructured YbAl 3 . A region of negative thermal expansion in the nanostructured material occurs at higher temperatures compared to that of bulk YbAl 3 . This shows that the reduction in the size of YbAl 3 not only affects electronic properties, but also the lattice dynamics of this material.
Embargo date: 2021-09-18
URI: http://hdl.handle.net/10651/53591
Sponsored: This work was supported in part by the Spanish Ministerio de Ciencia, Innovación y Universidades under Project MAT2017-83631-C3-3-R and in part by the Principado de Asturias, Spain, under Project GRUPINN IDI/2018/000185. The work of C. Echevarria-Bonet was supported by Banco Santander for their Mobility grant for professors and researchers from University of Oviedo (2019).
Project id.: MAT2017-83631-C3-3-R; GRUPINN IDI/2018/000185
MICINN/MAT2017-83631-C3-3-R
GRUPINN IDI/2018/000185
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