Valence fluctuation and electron–phonon coupling in La68−xCexAl10Cu20Co2 (x=0, 34, and 68) metallic glasses
作者： M. B. Tang , J. Q. Wang , W. H. Wang , L. Xia , K. C. Chan
DOI: 10.1063/1.3467516
关键词: Metallurgy 、 Grüneisen parameter 、 Thermal expansion 、 Instability 、 Amorphous metal 、 Materials science 、 Cerium 、 Condensed matter physics 、 Magnetic susceptibility 、 Valence (chemistry) 、 Thermal 、 General Physics and Astronomy
摘要: We study the anomalous acoustic softening behavior in La68−xCexAl10Cu20Co2 (x=0, 34, and 68) metallic glasses by magnetic susceptibility, thermal expansion, specific heat at low temperatures. The Ce-based glass exhibits valence fluctuation phenomenon, expansion Gruneisen parameter And we provide experimental evidence of existence strong electron–phonon coupling heat. properties are attributed to instability glasses.
scitation.org
harvard.edu
aip.org
sci-hub.se 参考文章(20)
F. R. Kroeger, C. A. Swenson, Absolute linear thermal‐expansion measurements on copper and aluminum from 5 to 320 K Journal of Applied Physics. ,vol. 48, pp. 853- 864 ,(1977) , 10.1063/1.323746
O. L. T. de Menezes, A. Troper, Electron-phonon interaction in mixed-valence systems Physical Review B. ,vol. 22, pp. 2127- 2130 ,(1980) , 10.1103/PHYSREVB.22.2127
E. S. Clementyev, P. A. Alekseev, M. Braden, J.-M. Mignot, G. Lapertot, V. N. Lazukov, I. P. Sadikov, Anomalous lattice dynamics in intermediate-valence CeNi Physical Review B. ,vol. 57, pp. R8099- R8102 ,(1998) , 10.1103/PHYSREVB.57.R8099
B Zhang, DQ Zhao, MX Pan, RJ Wang, WH Wang, None, Formation of cerium-based bulk metallic glasses Acta Materialia. ,vol. 54, pp. 3025- 3032 ,(2006) , 10.1016/J.ACTAMAT.2006.02.044
Jon Lawrence, Scaling behavior near a valence instability: The magnetic susceptibility of Ce In 3 − x Sn x Physical Review B. ,vol. 20, pp. 3770- 3782 ,(1979) , 10.1103/PHYSREVB.20.3770
G.C. Rout, M.S. Ojha, S.N. Behera, Electron–phonon coupling and longitudinal sound velocity in heavy fermion systems Physica B-condensed Matter. ,vol. 367, pp. 101- 113 ,(2005) , 10.1016/J.PHYSB.2005.06.003
P Yu, RJ Wang, DQ Zhao, HY Bai, None, Anomalous temperature dependent elastic moduli of Ce-based bulk metallic glass at low temperatures Applied Physics Letters. ,vol. 91, pp. 201911- ,(2007) , 10.1063/1.2813639
E. F. Lambson, W. A. Lambson, J. E. Macdonald, M. R. J. Gibbs, G. A. Saunders, D. Turnbull, Elastic behavior and vibrational anharmonicity of a bulk Pd40Ni40}P20 metallic glass Physical Review B. ,vol. 33, pp. 2380- 2385 ,(1986) , 10.1103/PHYSREVB.33.2380
A. Severing, W. Reichardt, E. Holland-Moritz, D. Wohlleben, W. Assmus, Observation of phonon anomalies in the intermediate-valence compoundCePd3 Physical Review B. ,vol. 38, pp. 1773- 1778 ,(1988) , 10.1103/PHYSREVB.38.1773
Bo Zhang, Ru-Ju Wang, Wei-Hua Wang, Response of acoustic and elastic properties to pressure and crystallization of Ce-based bulk metallic glass Physical Review B. ,vol. 72, pp. 104205- ,(2005) , 10.1103/PHYSREVB.72.104205