Size and shape evolution of embedded single-crystal αα-Fe nanowires
- Mohaddes-Ardabili, L.
- Zheng, H.
- Zhan, Q.
- Yang, S. Y.
- Ramesh, Ramamoorthy
- Salamanca-Riba, L.
- Wuttig, M.
- Ogale, S. B.
- Pan, Xiaoqing
Publication date
November 2005
DOI Publisher
AIP Publishing ISSN
0003-6951 Citation count (estimate)
14Abstract
The size and shape evolution of embedded ferromagnetic αα-Fe nanowires is discussed. The αα-Fe nanowires are formed by pulsed-laser deposition of La0.5Sr0.5FeO3−xLa0.5Sr0.5FeO3−x on single-crystal SrTiO3SrTiO3 (001) substrate in reducing atmosphere. The average diameter of the nanowires increases from d ≈ 4d≈4 to 50 nm as the growth temperature increases from T = 560T=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.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87835/2/203110_1.pd
Add to ORKG