; Zhong, Jun
; Chu, Wangsheng] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
; [Wu, Ziyu] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China
; [Kuzmin, Alexei
; Mironova-Ulmane, Nina] Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia
; [Marcelli, Augusto] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
A series of NicMg1-cO solid solutions has been studied for the first time looking at the structural disorder by means of x-ray absorption near-edge-structure (XANES) spectroscopy at the oxygen K edge. The experimental XANES signals were analysed within the full multiple scattering formalism and were interpreted taking into account clusters of up to 15 coordination shells around an absorbing oxygen atom. The substitution of nickel atoms by magnesium atoms results in a dramatic decrease of the empty density of states in the conduction band close to the Fermi level due to an exchange of the 3d(Ni)-2p(O) interaction with 3p(Mg)-2p(O). Besides, a simultaneous small decrease of the 3d(Ni)-2p(O) hybridization is also induced by the lattice expansion, determined by the difference in ionic radii between nickel and magnesium ions.
Chen DL,Zhong J,Chu WS,et al. Structural disorder and electronic hybridization in NicMg1-cO solid solutions probed by XANES at the oxygen K edge[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2007,19(35):356219.
陈栋梁.,钟俊.,储旺盛.,Chen, DL.,Zhong, J.,...&Marcelli, A.(2007).Structural disorder and electronic hybridization in NicMg1-cO solid solutions probed by XANES at the oxygen K edge.JOURNAL OF PHYSICS-CONDENSED MATTER,19(35),356219.
陈栋梁,et al."Structural disorder and electronic hybridization in NicMg1-cO solid solutions probed by XANES at the oxygen K edge".JOURNAL OF PHYSICS-CONDENSED MATTER 19.35(2007):356219.