%0 Journal Article %T Hydrothermal Preparation of -Doped Titanate Nanotubes: Magnetic Properties and Photovoltaic Performance %A Hoda S. Hafez %A M. Saif %A James T. McLeskey %A Jr. %A M. S. A. Abdel-Mottaleb %A I. S. Yahia %A T. Story %A W. Knoff %J International Journal of Photoenergy %D 2009 %I Hindawi Publishing Corporation %R 10.1155/2009/240402 %X Pure and Gd3 %U http://www.hindawi.com/journals/ijp/2009/240402/