Negative Thermal Expansion in Nanostructured Intermediate-Valence YbAl3

被引：1

作者：

Echevarria-Bonet, Cristina ^{[1
]}

de la Fuente Rodriguez, Maria ^{[2
]}

Espeso, Jose, I ^{[2
]}

Blanco Rodriguez, Jesus Angel ^{[1
]}

Puente Orench, Ines ^{[3
,4
]}

Rojas, Daniel P. ^{[5
]}

Rodriguez Fernandez, Lidia ^{[6
]}

Fauth, Francois ^{[7
]}

Fernandez Barquin, Luis ^{[2
]}

机构：

[1] Univ Oviedo, Dept Phys, Oviedo 33007, Spain

[2] Univ Cantabria, Fac Ciencias, Dept Ciencias Tierra & Fis Mat Condensada, E-39005 Santander, Spain

[3] Inst Laue Langevin, F-38042 Grenoble, France

[4] Univ Zaragoza, Spanish Natl Res Council, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain

[5] Univ Politecn Madrid, Escuela Tecn Super Arquitectura Madrid, Dept Estructuras & Fis Edificac, E-28040 Madrid, Spain

[6] Univ Cantabria, Serv Microscopia Elect Transmis, E-39005 Santander, Spain

[7] CELLS ALBA Synchrotron, E-08290 Barcelona, Spain

来源：

IEEE MAGNETICS LETTERS | 2019年 / 10卷

关键词：

Thermal expansion; Metals; Lattices; Temperature dependence; Temperature measurement; Coherence; Powders; Nanomagnetics; intermediate valence; thermal expansion; neutron diffraction; synchrotron X-ray diffraction; MAGNETIC-SUSCEPTIBILITY; TEMPERATURE; COEFFICIENT;

D O I：

10.1109/LMAG.2019.2942262

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Interest in the strongly correlated electron system YbAl3 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 11nm. Powder diffraction measurements using neutron and synchrotron radiation allow us to estimate the thermal expansion of the nanostructured YbAl3. A region of negative thermal expansion in the nanostructured material occurs at higher temperatures compared to that of bulk YbAl3. This shows that the reduction in the size of YbAl3 not only affects electronic properties, but also the lattice dynamics of this material.

引用

页数：5

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