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Stability of the Pd-Co-Ni-Cu-P Metallic Glasses

Published online by Cambridge University Press:  01 February 2011

Daisuke Fukamaki ,
Tsunehiro Takeuchi ,
Masashi Hasegawa ,
Kazuo Soda ,
Hirokazu Sato  and
Uichiro Mizutani
Daisuke Fukamaki
Affiliation:
[email protected], Nagoya University, Applied Physics, Furouchou Chikusaku, Nagoya, 464-0843, Japan, +10-81-52-789-3822
Tsunehiro Takeuchi
Affiliation:
[email protected], Nagoya University, Department of Applied Physics, Nagoya, 464-0843, Japan
Masashi Hasegawa
Affiliation:
[email protected], Nagoya University, Department of Materials Science and Engineering, Nagoya, 464-8601, Japan
Kazuo Soda
Affiliation:
[email protected], Nagoya University, Department of Quantum Mechanics Engineering, Nagoya, 464-8601, Japan
Hirokazu Sato
Affiliation:
[email protected], Aichi University of Education, Department of Physics, Kariya, 448-8542, Japan
Uichiro Mizutani
Affiliation:
[email protected], Toyota Physical and Chemical Research Institute, Nagakute, 480-1192, Japan
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Abstract

Stability of Pd-Co-Ni-Cu-P metallic glass was investigated in terms of free energy using first principle cluster calculations, thermal analysis, and photoemission spectroscopy measurements. We found that the internal energy of the Pd-based metallic glasses is dominated by the electronic structure near the Fermi level. The analyses on the electronic structure and local atomic arrangements indicate that the substitution of cobalt or a hypothetical atom Co0.5Cu0.5 for nickel in the Pd40Ni40P20 metallic glass decreases the free energy of the Pd-Ni-P metallic glass by increasing entropy without altering significantly internal energy. On the basis of the idea mentioned above, we prepared Pd28Co24Ni24P24, Pd25Co25Ni25P25 and Pd40Co40/3Ni40/3Cu40/3P20 metallic glasses. These metallic glasses certainly showed the nearly highest TX, which directly reflect the activation energy against crystallization, among the Pd-based metallic glasses ever reported.

Keywords

amorphouselectronic structurePd
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1048: Symposium Z – Bulk Metallic Glasses–2007 , 2007 , 1048-Z05-21
Copyright
Copyright © Materials Research Society 2008

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References

1. Telford, M., Materials Today 7, 36 (2004).Google Scholar
2. Inoue, A., Acta Mater. 48, 279 (2000)Google Scholar
3. Takeuchi, T. et al. , Mater. Trans. 46, 2791 (2005).Google Scholar
4. Takeuchi, T. et al. , Mater. Sci. and Eng. A 449–451 599 (2007).Google Scholar
5. Park, C. et al. , Mater. Trans. JIM 40, 491 (2006).Google Scholar
6. Takeuchi, T. et al. , Mater. Trans. 48, 1292 (2007).Google Scholar
7. Adachi, H. et al. , J. Phys. Soc. Jpn. 45 875 (2003).Google Scholar
8. Wang, W. H. et al. , Mater. Sci. and Eng. R 44, 45 (2004).Google Scholar
9. Hitata, A. et al. , Ultramicroscopy 107, 116 (2007).Google Scholar
10. He, Y. et al. , Appl. Phys. Lett. 69 1861 (1996).Google Scholar