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Structure Evolution and Corresponding Electrical Properties in Weakly Bound Co-C60 Mixture

Published online by Cambridge University Press:  01 February 2011

Seiji Sakai ,
Hiroshi Naramoto ,
Yonghua Xu ,
Tri Hardi Priyanto ,
Vasily Lavrentiev  and
Kazumasa Narumi
Seiji Sakai
Affiliation:
Advanced Science Research Center, Japan Atomic Energy Research Institute, Watanuki 1233, Takasaki, Gunma 370–1292, Japan
Hiroshi Naramoto
Affiliation:
Advanced Science Research Center, Japan Atomic Energy Research Institute, Watanuki 1233, Takasaki, Gunma 370–1292, Japan
Yonghua Xu
Affiliation:
Advanced Science Research Center, Japan Atomic Energy Research Institute, Watanuki 1233, Takasaki, Gunma 370–1292, Japan
Tri Hardi Priyanto
Affiliation:
Advanced Science Research Center, Japan Atomic Energy Research Institute, Watanuki 1233, Takasaki, Gunma 370–1292, Japan
Vasily Lavrentiev
Affiliation:
Advanced Science Research Center, Japan Atomic Energy Research Institute, Watanuki 1233, Takasaki, Gunma 370–1292, Japan
Kazumasa Narumi
Affiliation:
Advanced Science Research Center, Japan Atomic Energy Research Institute, Watanuki 1233, Takasaki, Gunma 370–1292, Japan
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Abstract

Mixture films of Co and C60 with various compositions were fabricated by co-evaporation under UHV condition. As for the saturation composition with C60-based phase, Co5C60 is deduced from the systematic Raman analysis. It is reasonably interpreted that the C60-based phase can be realized by less than one electron transfer per a Co atom into C60 and the contribution of a covalent bonding which induces a differently coordinated structure of the C60 molecules from the fcc-C60. The electrical conduction features are dependent on the Co content. In the C60-based phase up to Co5C60, the conduction mechanism seems to be described by the band concept modified with the disorder, followed by the hopping conduction through the precipitated Co clusters or particles and then, by the metallic one with increasing Co content.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 788: Symposium L – Continuous Nanophase and Nanostructured Materials , 2003 , L11.49
Copyright
Copyright © Materials Research Society 2004

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References

REFERENCES

1. Lavrentiev, V., Abe, H., Yamamoto, S., Naramoto, H., Narmi, K., Surf. Interface Anal. 35, 36 (2003).Google Scholar
2. Sakai, S., Naramoto, H., Xu, Y., Lavrentiev, V., Narumi, K., Phys. Rev. B, submitted.Google Scholar
3. Dong, Z. H., Ahou, P., Holden, J. M. and Eklund, P. C., Pys. Rev. B 48, 2862 (1993).Google Scholar
4. Wang, K. A., Wang, Y., Zhou, P., Holden, J. M., Ren, S., Hager, G. T., Ni, H. F., Eklund, P. C., Dresselhaus, G., Dresselhaus, M. S., Phy. Rev. B 45, 1955 (1992).Google Scholar
5. Mitch, M. G., Chase, S. J., Lannin, J. S., Phys. Rev. Lett. 68, 883 (1992).Google Scholar
6. Dresselhaus, M. S., Dresselhaus, G. D., Eklund, P. C., Raman, J. Spectroscopy 27, 351 (1996), and references therein.Google Scholar
7. Chen, X. H., Zhou, X. J., Roth, S., Phys. Rev. B 54, 3971 (1996).Google Scholar
8. Maxwell, A. J., Brühwiler, P. A., Nilsson, A., Mårtensson, N., Phys. Rev. B 49, 10717 (1994).Google Scholar
9. Maxwell, A. J., Brühwiler, P. A., Anderson, S., Arvanitis, D., Hernnäs, B., Karis, O., Mancini, D. C., Mårtensson, N., Gray, S. M., Johansson, M. K.-J., Johansson, L. S. O., Phys. Rev. B R5546 (1995).Google Scholar
10. Hőgberg, H., Malm, J.-O., Talyzin, A., Norin, L., Lu, J., Jansson, U., J. Electrochamical Society 147, 3361 (2000).Google Scholar
11. Gray, D. E., American Institute of Physics Handbook 2nd Edition (McGraw-Hill, New York).Google Scholar
12. Arai, T., Murakami, Y., Suematsu, H., Kikuchi, K., Achiba, Y., Ikemoto, I., Solid State Comm. 84, 8, 827 (1992).Google Scholar
13. Devenyi, A., Manaila-Devenyi, R., Hill, R. M., Phys. Rev. Lett. 29, 1738 (1972).Google Scholar
14. Hill, R. M., Thin Solid Films 51, 133 (1978).Google Scholar
15. Croitoru, N., Popescu, C., Telnic, M., Vescan, L., Phys. Stat. Sol. (b) 48, 429 (1971).Google Scholar
16. Mott, N. F., Philos. Mag. 19, 835 (1969).Google Scholar
17. Mott, N. F., Conductions in Non-Crystalline Materials (Clarendon, Oxford, 1987).Google Scholar