The change of d-electron occupancy in Ti-Ni solid-solution alloys measured by electron energy loss spectroscopy
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