High‐Density 40 nm Diameter Sb‐Rich Bi_2–<i>_x</i>Sb<i>_x</i>Te₃ Nanowire Arrays

Abstract

Arrays of 40 nm Bi 2– x Sb x Te 3 nanowires ( x ∼ 0.7, density ∼ 5 × 10 10 cm –2 ) have been synthesized. The individual wires are crystalline, relatively homogeneous, and highly textured in a 〈110〉 direction after thermal treatment. Wires containing Sb exhibit incomplete wetting of the alumina templates in which they are grown (see Figure). The composition, crystallinity, and morphology of the nanowires can also be manipulated.