Abstract
CaSi2 and CaSi have been investigated by Auger Valence Electron Spectroscopy (AVES). Some drastic differences of the Auger peak due to 3s states in the Si atoms were observed in the Si[2s, 2p, V] Auger spectra. The peak that arised from valence electron states in the Ca atoms was observed in the Ca[2p, 3p, V] Auger spectra for both Ca-silicides. This result suggests that the Ca–Si bonds are partially ionic. However, the number of the valence electrons in Ca atoms for CaSi was larger than that for CaSi2. This result implies that the part of homopolar bonds between the Si and Ca atoms in CaSi is stronger than that in CaSi2. Based on these results, it has been concluded that the change of the Si [2s, 2p,V] Auger spectra is associated with the difference of the part of homopolar bonds between the Si and Ca atoms.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S. Fahy and R. Hamann, Phys. Rev. B 41, 7587 (1990).
C. G. Van de Walle, Phys. Rev. B 43, 11 913 (1991).
A. F. Well, Structural Inorganic Chemistry (Oxford University, Oxford, 1962), p. 773.
Y. Matunaga, Bunsi To Kessho (Molecular and Crystal) (Shokabo, Tokyo, 1965), p. 146 (in Japanese).
I. Hirabayashi, Kotaibuturi (Solid State Physics) 17, 681 (1982) (in Japanese).
H. Fujita, Y. Fuchida, and H. Nakayama, Philos. Mag. A 59, 873 (1989).
H. Yasuda, H. Nakayama, and H. Fujita, Jpn. J. Appl. Phys. 28, 2234 (1989).
K. Ueda, H. Nakayama, M. Sekine, and H. Fujita, Vacuum 42, 547 (1991).
H. Nakayama, T. Nishino, K. Ueda, S. Takeno, and H. Fujita, Ultramicroscopy 39, 329 (1991).
Y. Fujiwara, S. Hirata, M. Nishikubo, T. Kobayashi, H. Nakayama, and H. Fujita, IEEE Trans. Magn. 27, 1166 (1991).
O. Bisi, in Auger Spectroscopy and Electronic Structure, edited by G. Cubiotti, G. Mondio, and K. Wandelt (Springer, Berlin, 1989), p. 30.
M. Sancrotti, E. Vescovo, L. Calliari, and F. Marchetti, in Auger Spectroscopy and Electronic Structure, edited by G. Cubiotti, G. Mondio, and K. Wandelt (Springer, Berlin, 1989), p. 116.
M. Sancrotti and A. Rizzi, Phys. Rev. B 37, 3120 (1988).
M. Sancrotti, I. Abbati, A. Rizzi, L. Calliari, F. Marchetti, and O. Bisi, Surf. Sci. 189/190, 300 (1987).
L. Calliari, F. Marchetti, M. Sancrotti, O. Bisi, A. Iandelli, G. L. Olcese, and A. Palenzona, Phys. Rev. B 41, 7569 (1990).
O. Bisi, L. Braicovich, C. Carbone, I. Lindau, A. Iandelli, G. L. Olcese, and A. Palenzona, Phys. Rev. B 40, 10 194 (1989).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Abe, S., Nakayama, H., Nishino, T. et al. Auger valence electron spectra in Ca-silicides. Journal of Materials Research 12, 407–411 (1997). https://doi.org/10.1557/JMR.1997.0059
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/JMR.1997.0059