Abstract
C-site doped MgCNi3 compounds, MgC1−x B x Ni3 (x=0.15, 0.20) and MgC y Ni3 (y=1.00, 0.80, 0.65), have been investigated by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The binding energies of Ni 2p3/2 and C 1s for undoped MgCNi3 are 853.173 eV and 283.640 eV, respectively. Interestingly, the binding energy of Ni 2p3/2 is found to shift to a lower value with decreasing C-site occupation in MgC y Ni3 samples. The C-site doped by boron could also lead to a slight decrease of the binding energy of Ni 2p3/2. However, the C-site doping has few effects on the binding energy of C 1s. It is suggested that there is charge transfer from Ni- to C-site atom. The hybridism between Ni and C has an important effect on the superconductivity of MgCNi3.
Similar content being viewed by others
References
He, T., Huang, Q., Ramirez, A.P., Wang, Y., Regan, K.A., Rogado, N., Hayward, M.A., Haas, M.K., Slusky, J.S., Inumara, K., Zandbergen, H.W., Ong, N.P., Cava, R.J.: Nature 411, 54 (2001)
Szajek, A.: J. Phys. Condens. Matter 13, L595 (2001)
Dugdale, S.B., Jarlborg, T.: Phys. Rev. B 64, 100508(R) (2001)
Shim, J.H., Kwon, S.K., Min, B.I.: Phys. Rev. B 64, 180510(R) (2001)
Singh, D.J., Mazin, I.I.: Phys. Rev. B 64, 140507(R) (2001)
Rosner, H., Weht, R., Johannes, M.D., Pickett, W.E., Tosatti, E.: Phys. Rev. Lett. 88, 027001 (2002)
Ren, Z.A., Che, G.C., Jia, S.L., Chen, H., Ni, Y.M., Liu, G.D., Zhao, Z.X.: Physica C 371, 1 (2002)
Ouyang, L.Z., Wang, H., Peng, C.H., Zeng, M.Q., Chung, C.Y., Zhu, M.: Mater. Lett. 58, 2203 (2004)
Klimczuk, T., Avdeev, M., Jorgensen, J.D., Cava, R.J.: Phys. Rev. B 71, 184512 (2005)
Yao, Y.X., Ying, X.N., Huang, Y.N., Wang, Y.N., Ren, Z.A., Che, G.C., Wen, H.H., Zhao, Z.X., Ding, J.W.: Supercond. Sci. Technol. 17, 608–611 (2004)
Kishi, K.: J. Electron Spectrosc. Relat. Phenom. 46, 237 (1988)
Kim, J.H., Ahn, J.S., Kim, J., Park, M.-S., Lee, S.I., Choi, E.J., Oh, S.-J.: Phys. Rev. B 66, 172507 (2002)
Kobayashi, K., Mizokawa, T., Mamiya, K., Sekiyama, A., Fujimori, A.: Phys. Rev. B 54, 507–514 (1996)
Ujvari, T., Toth, A., Kovacs, G.J., Safran, G., Geszti, O., Radnoczi, G., Bertoti, I.: Surf. Interface Anal. 36, 760–764 (2004)
Laidani, N., Calliari, L., Speranza, G., Micheli, V., Galvanetto, E.: Surf. Coat. Technol. 100–101, 116–124 (1998)
Shan, L., Xia, K., Liu, Z.Y., Wen, H.H., Ren, Z.A., Che, G.C., Zhao, Z.X.: Phys. Rev. B 68, 024523 (2003)
Joseph, P.J.T., Singh, P.P.: Phys. Rev. B 72, 064519 (2005)
Amos, T.G., Huang, Q., Lynn, J.W., He, T., Cava, R.J.: Solid State Commun. 121, 73–77 (2002)
Li, S.Y., Fan, R., Chen, X.H., Wang, C.H., Mo, W.Q., Ruan, K.Q., Xiong, Y.M., Luo, X.G., Zhang, H.T., Li, L., Sun, Z., Cao, L.Z.: Phys. Rev. B 64, 132505 (2001)
Young, D.P., Moldovan, M., Craig, D.D., Adams, P.W., Chan, J.Y.: Phys. Rev. B 68, 020501(R) (2003)
Klimczuk, T., Cava, R.J.: Phys. Rev. B 70, 212514 (2004)
Shi, L., Chu, S.N., Zhao, J.Y., Wang, Y., He, L.F., Guo, Y.Q., Wang, C.L.: Mater. Chem. Phys. 138, 743 (2013)
Acknowledgements
This project was financially supported by the National Basic Research Program of China (973 Program, Grant No. 2009CB939901), and the National Science Foundation of China, Grant No. 10874161.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Chu, S., Shi, L., Wu, W. et al. Electronic Property of the C-Site Doped MgCNi. J Supercond Nov Magn 27, 209–213 (2014). https://doi.org/10.1007/s10948-013-2242-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10948-013-2242-0