@article{33644, keywords = {pulsed laser deposition, nanowires, nanostructured materials, Ferromagnetism, Single crystals, Circular shape, Octahedral}, author = {L Mohaddes-Ardabili and H Zheng and Q Zhan and S.Y Yang and Ramamoorthy Ramesh and L Salamanca-Riba and M Wuttig and S.B Ogale and X Pan}, title = {Size and shape evolution of embedded single-crystal α -Fe nanowires}, abstract = {The size and shape evolution of embedded ferromagnetic α -Fe nanowires is discussed. The α -Fe nanowires are formed by pulsed-laser deposition of La0.5 Sr0.5 FeO3-x on single-crystal SrTiO3 (001) substrate in reducing atmosphere. The average diameter of the nanowires increases from d≈4 to 50 nm as the growth temperature increases from T=560 to 840 °C. Their in-plane shape evolves from circular to octahedral and square shape with [110] facets dominating as the growth temperature increases. A fitting to a theoretical calculation shows that the circular shape is stable when the diameter of the nanowires is smaller than 8 nm. © 2005 American Institute of Physics.}, year = {2005}, journal = {Applied Physics Letters}, volume = {87}, number = {20}, pages = {1-3}, issn = {00036951}, doi = {10.1063/1.2128480}, note = {cited By 15}, language = {eng}, }