| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Specific Heat in a Typical Metallic Glass Former |
| KE Hai-Bo,ZHAO Zuo-Feng,WEN Ping**,WANG Wei-Hua |
| Institute of Physics, Chinese Academy of Sciences, Beijing 100190 |
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KE Hai-Bo, ZHAO Zuo-Feng, WEN Ping** et al 2012 Chin. Phys. Lett. 29 046402 |
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Abstract The specific heat in a typical Pd40Ni10Cu30P20 metallic glass forming system is investigated. It is found that the specific heat of the metallic liquid is around 4.7R (R is the gas constant) and that it is almost independent of temperature. The glass transition observed during cooling is accompanied by a decrease in the specific heat of 1.5R. The specific heat of the metallic glass is similar to that of its crystalline phases, contributed mainly from atomic vibrations. Combined with the results of the structural relaxation and diffusivities, we demonstrate an intrinsic connection between the atomic motion and the specific heat in the metallic glass-forming liquid. The results support the idea that glass transition is a process accompanied by the freezing of most of the atomic transitional motions in a metallic supercooled liquid during cooling.
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| Keywords:
64.70.P-
64.70.pe
65.40.Ba
66.10.C-
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Received: 24 February 2012
Published: 04 April 2012
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| [1] Jackle J 1986 Rep. Prog. Phys. 49 171[2] Donth E 2001 The Glass Transition: Relaxation Dynamics in Liquids and Disordered Material (Berlin: Springer)[3] Debenedetti P G and Stillinger F H 2001 Nature 410 259[4] Dyre J C 2006 Rev. Mod. Phys. 78 953[5] Torquato S 2000 Nature 405 521[6] Kauzmann W 1948 Chem. Rev. 43 219[7] Tanaka H 2003 Phys. Rev. Lett. 90 055701[8] Landau L D and Lifshitz E M 1999 Statistical Physics Part 1 (Oxford: Butterworth-Heinemann)[9] Adam G and Gibbs J H 1965 J. Chem. Phys. 43 139[10] Dyre J C et al 1996 Phys. Rev. B 53 2171[11] Wunderlich B 1960 J. Chem. Phys. 64 1052[12] Bernal J D 1960 Nature 185 68[13] Greer A L 1995 Science 267 1947[14] Wen P, Zhao D Q et al 2004 Appl. Phys. Lett. 84 2790[15] Zhao Z F et al 2007 Phys. Rev. B 75 174201[16] Meye A et al 1999 Phys. Rev. Lett. 83 5027[17] Tang X- P et al 1999 Nature 402 160[18] Johnson W L 1999 MRS Bull. 24 42[19] Zhao Z F et al 2006 Appl. Phys. Lett. 89 71920[20] Bartsch A et al 2010 Phys. Rev. Lett. 104 195901[21] Nishiyama N et al 2000 Appl. Phys. Lett. 76 3914[22] Johari G P 2002 J. Non-Cryst. Solids 307 317[23] Hodge I M 1994 J. Non-Cryst. Solids 169 211[24] Xu D and Johnson W L 2006 Phys. Rev. B 74 024207[25] Wen P et al 2010 Phys. Status Solidi A 207 2693[26] Xia X and Wolynes P G 2001 Phys. Rev. Lett. 86 5526[27] Castaing B and Souletie J 1991 J. Phys. I 1 403[28] Monthus C and J Bouchaud 1996 J Phys. A 29 3847[29] Chudley C T and Elliott R T 1961 Prog. Phys. Soc. 77 353[30] Goldstein M 1969 J. Chem. Phys. 51 3728[31] Voigtmann T and Horbach J 2009 Phys. Rev. Lett. 103 205901[32] Moreno A J and Colmenero J 2006 Phys. Rev. E 74 021409[33] Flubacher P et al 1960 J. Chem. Phys. 33 1751[34] Blackman M 1941 Rep. Prog. Phys. 8 11[35] Ke H B et al 2010 Appl. Phys. Lett. 96 251902 |
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