Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2025-01-02T21:42:55.702Z Has data issue: false hasContentIssue false
  • English
  • Français

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:
fukamaki@mizu.xtal.nagoya-u.ac.jp, Nagoya University, Applied Physics, Furouchou Chikusaku, Nagoya, 464-0843, Japan, +10-81-52-789-3822
Tsunehiro Takeuchi
Affiliation:
takeuchi@nuap.nagoya-u.ac.jp, Nagoya University, Department of Applied Physics, Nagoya, 464-0843, Japan
Masashi Hasegawa
Affiliation:
hasegawa@numse.nagoya-u.ac.jp, Nagoya University, Department of Materials Science and Engineering, Nagoya, 464-8601, Japan
Kazuo Soda
Affiliation:
k-soda@nucl.nagoya-u.ac.jp, Nagoya University, Department of Quantum Mechanics Engineering, Nagoya, 464-8601, Japan
Hirokazu Sato
Affiliation:
hsato@auecc.aichi-edu.ac.jp, Aichi University of Education, Department of Physics, Kariya, 448-8542, Japan
Uichiro Mizutani
Affiliation:
riken-mizutani@mosk.tytlabs.co.jp, Toyota Physical and Chemical Research Institute, Nagakute, 480-1192, Japan
Get access

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

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