The change of d-electron occupancy in Ti-Ni solid-solution alloys measured by electron energy loss spectroscopy
W. G. Yang1a and X. Zhang2
Key Laboratory of Advanced Welding Technology, Department of Materials Science and Engineering, Jiangsu University of Science and Technology - Mengxi Road 2, 212003 Zhenjiang, China
2 Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University Shuangqing Road 30, 100084 Beijing, China (b)
Accepted: 1 March 2012
Pure Ti, pure Ni and some Ti-Ni solid-solution alloys have been studied by electron energy loss spectroscopy (EELS) and the d-electron occupancy of both Ti and Ni in the alloys has been calculated in terms of white-line intensity. It is found that after alloying the d-electron occupancy of Ti increases noticeably and the value is larger than 1, and the change of d-electron occupancy of Ni is very small. The change of d-electron occupancy is discussed in terms of charge transfer mechanism, local charge neutrality (LCN) approximation, and hybridization.
PACS: 79.20.Uv – Electron energy loss spectroscopy / 34.80.Dp – Atomic excitation and ionization
© EPLA, 2012