Valence fluctuation and electron-phonon coupling in La68-xCexAl10Cu20Co2(x=0, 34, and 68) metallic glasses

M. B. Tang; J. Q. Wang; W. H. Wang; L. Xia; Kang Cheung Chan; J. T. Zhao

doi:10.1063/1.3467516

Valence fluctuation and electron-phonon coupling in La_68-xCe_xAl₁₀Cu₂₀Co₂(x=0, 34, and 68) metallic glasses

M. B. Tang, J. Q. Wang, W. H. Wang, L. Xia, Kang Cheung Chan, J. T. Zhao

Research output: Journal article publication › Journal article › Academic research › peer-review

5 Citations (Scopus)

Abstract

We study the anomalous acoustic softening behavior in La68-xCexAl10Cu20Co2(x=0, 34, and 68) metallic glasses by magnetic susceptibility, thermal expansion, and specific heat at low temperatures. The Ce-based metallic glass exhibits valence fluctuation phenomenon, anomalous thermal expansion and acoustic Grüneisen parameter at low temperatures. And we provide experimental evidence of the existence of strong electron-phonon coupling in the Ce-based metallic glasses by specific heat. The anomalous acoustic and thermal properties are attributed to the valence instability in the metallic glasses.

Original language	English
Article number	033525
Journal	Journal of Applied Physics
Volume	108
Issue number	3
DOIs	https://doi.org/10.1063/1.3467516
Publication status	Published - 1 Aug 2010

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/1.3467516

http://hdl.handle.net/10397/4997

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title = "Valence fluctuation and electron-phonon coupling in La68-xCexAl10Cu20Co2(x=0, 34, and 68) metallic glasses",

abstract = "We study the anomalous acoustic softening behavior in La68-xCexAl10Cu20Co2(x=0, 34, and 68) metallic glasses by magnetic susceptibility, thermal expansion, and specific heat at low temperatures. The Ce-based metallic glass exhibits valence fluctuation phenomenon, anomalous thermal expansion and acoustic Gr{\"u}neisen parameter at low temperatures. And we provide experimental evidence of the existence of strong electron-phonon coupling in the Ce-based metallic glasses by specific heat. The anomalous acoustic and thermal properties are attributed to the valence instability in the metallic glasses.",

author = "Tang, {M. B.} and Wang, {J. Q.} and Wang, {W. H.} and L. Xia and Chan, {Kang Cheung} and Zhao, {J. T.}",

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T1 - Valence fluctuation and electron-phonon coupling in La68-xCexAl10Cu20Co2(x=0, 34, and 68) metallic glasses

AU - Tang, M. B.

AU - Wang, J. Q.

AU - Wang, W. H.

AU - Xia, L.

AU - Chan, Kang Cheung

AU - Zhao, J. T.

PY - 2010/8/1

Y1 - 2010/8/1

N2 - We study the anomalous acoustic softening behavior in La68-xCexAl10Cu20Co2(x=0, 34, and 68) metallic glasses by magnetic susceptibility, thermal expansion, and specific heat at low temperatures. The Ce-based metallic glass exhibits valence fluctuation phenomenon, anomalous thermal expansion and acoustic Grüneisen parameter at low temperatures. And we provide experimental evidence of the existence of strong electron-phonon coupling in the Ce-based metallic glasses by specific heat. The anomalous acoustic and thermal properties are attributed to the valence instability in the metallic glasses.

AB - We study the anomalous acoustic softening behavior in La68-xCexAl10Cu20Co2(x=0, 34, and 68) metallic glasses by magnetic susceptibility, thermal expansion, and specific heat at low temperatures. The Ce-based metallic glass exhibits valence fluctuation phenomenon, anomalous thermal expansion and acoustic Grüneisen parameter at low temperatures. And we provide experimental evidence of the existence of strong electron-phonon coupling in the Ce-based metallic glasses by specific heat. The anomalous acoustic and thermal properties are attributed to the valence instability in the metallic glasses.

UR - http://www.scopus.com/inward/record.url?scp=77955864166&partnerID=8YFLogxK

U2 - 10.1063/1.3467516

DO - 10.1063/1.3467516

M3 - Journal article

SN - 0021-8979

VL - 108

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 3

M1 - 033525

ER -

Valence fluctuation and electron-phonon coupling in La_68-xCe_xAl₁₀Cu₂₀Co₂(x=0, 34, and 68) metallic glasses

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