Growth and characterization of the La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ nanowires

ORAL

Abstract

Conventional electrospinning method provides a simple approach to synthesis polymer nanowires. In this work, we report the growth, structural characterization, and magnetic properties of half-metallic, ferromagnetic La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ (LSMO) alloy nanowires that are first time grown on Si/SiO$_{2 }$substrates by the electrospinning method. Electrospun nanowires are annealed in an ultra-high purity argon-hydrogen gas mixture. Uniform, continuous, high aspect ratio LSMO nanowires with diameters in the range of 60--300 nm and lengths up to 500 $\mu $m are grown. The temperature dependent magnetization behavior of LSMO nanowires shows ferromagnetic behavior, and symmetric hysteresis loops are observed with magnetic fields applied to the substrate at 10 K and 300 K. Finally, we will discuss the spin dependent electrical transport properties of the single LSMO nanowire.

Authors

  • Jugdersuren Battogtokh

    1,2

  • Sungmu Kang

    2, Catholic University of America

  • Robert S. DiPietro

    3

  • Donald Heiman

    3

  • Andrew C. Buechele

    2

  • Ian Pegg

    1,2, Department of Physics and Vitreous State Laboratory, The Catholic University of America, Washington, DC

  • John Philip

    1,2