Structure of metal nanowires in nanoporous alumina membranes studied by EXAFS and X-ray diffraction Article

Benfield, RE, Grandjean, D, Dore, JC et al. (2001). Structure of metal nanowires in nanoporous alumina membranes studied by EXAFS and X-ray diffraction . 8(3), 399-402.



cited authors

  • Benfield, RE; Grandjean, D; Dore, JC; Wu, Z; Kröll, M; Sawitowski, T; Schmid, G

fiu authors

abstract

  • The structure of nanowires of different metals grown within nanoporous alumina membranes has been studied by EXAFS, WAXS and high energy X-ray diffraction. Nanowires of gold, silver, copper and iron adopt the lattice structure and bond distances of the bulk metals. Cobalt nanowires on the other hand were composed of a mixture of hcp phase, stable at room temperature, and fcc phase, which in bulk cobalt is normally stable only at high temperatures, in a ratio depending on the pore size. The nanowires are non-continuous but are made of nanocrystallites whose shape and size was found to depend strongly on the metal. All the metals except gold showed the presence of a preferred orientation which was slight in the case of Ag and Cu but much stronger in the case of iron and cobalt nanowires.

publication date

  • January 1, 2001

start page

  • 399

end page

  • 402

volume

  • 8

issue

  • 3