Distorted icosahedral Ni5Nb3Zr5 clusters in the as-quenched and hydrogenated amorphous (Ni0.6Nb 0.4)0.65Zr0.35 alloys

M. Matsuura, M. Fukuhara, K. Konno, T. Fujita, M. W. Chen, N. Fujima, A. Inoue

研究成果: Article査読

7 被引用数 (Scopus)


Local structures of the hydrogenated (Ni0.6Nb 0.4)1-xZrx (x = 0.3-0.4) amorphous alloys attract much attention for the sake of their epoch-making electronic transport behaviors. We investigated the local structures by XAFS for the as-quenched (Ni0.6Nb0.4)0.65Zr0.35 and hydrogenated [(Ni0.6Nb0.4)0.65Zr 0.35]0.922H0.078 amorphous alloys, in which ballistic conductivity has been observed. XAFS results of the Ni K-edge are analyzed based on the structure model deduced by the first principle calculation. The analysis suggests that highly distorted icosahedral Ni 5Nb3Zr5 cluster, which has a centered-Ni and a surrounding Nb triangle, is a main structural unit of (Ni0.6Nb 0.4)0.65Zr0.35 and the [(Ni 0.6Nb0.4)0.65Zr0.35] 0.922H0.078 amorphous alloys. This distorted icosahedral Ni5Nb3Zr5 cluster can be associated with the occurrence of the singular electronic transport behaviors of the hydrogenated (Ni0.6Nb0.4)0.65Zr0.35 alloy.

ジャーナルJournal of Non-Crystalline Solids
出版ステータスPublished - 2011 9 15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • 凝縮系物理学
  • 材料化学


「Distorted icosahedral Ni<sub>5</sub>Nb<sub>3</sub>Zr<sub>5</sub> clusters in the as-quenched and hydrogenated amorphous (Ni<sub>0.6</sub>Nb <sub>0.4</sub>)<sub>0.65</sub>Zr<sub>0.35</sub> alloys」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。