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Crystallinity Control of Ferromagnetic Contacts in Stressed Nanowire Templates and the Magnetic Domain Anisotropy
- Source :
- Nano Letters. 12:4341-4348
- Publication Year :
- 2012
- Publisher :
- American Chemical Society (ACS), 2012.
-
Abstract
- We report the controlled growth of single-crystalline ferromagnetic contacts through solid state reaction at nanoscale. Single-crystal Mn(5)Si(3) and Fe(5)Ge(3) contacts were grown within stressed Si and Ge nanowire templates, where oxide-shells were used to exert compressive stress on the silicide or germanide. Compared to polycrystalline silicide and germanide structures observed within bare nanowires, the built-in high strain in the oxide-shelled nanostructures alters the nucleation behavior of the ferromagnetic materials, leading to single crystal growth in the transverse/radial direction. Interestingly, the compressive stress is also found to affect the magnetic anisotropy of the ferromagnetic contacts. In-plane and out-of-plane magnetization were observed in Fe(5)Ge(3) for different crystal orientations, showing distinctly preferred domain orientations. These interesting results display the capability to control both the crystallinity and the magnetic anisotropy of ferromagnetic contacts in engineered nanostructures.
- Subjects :
- Materials science
Magnetic domain
Condensed matter physics
Mechanical Engineering
Nanowire
Bioengineering
General Chemistry
Condensed Matter Physics
Germanide
Condensed Matter::Materials Science
Magnetic anisotropy
Magnetization
chemistry.chemical_compound
Crystallography
Ferromagnetism
chemistry
General Materials Science
Crystallite
Anisotropy
Subjects
Details
- ISSN :
- 15306992 and 15306984
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Nano Letters
- Accession number :
- edsair.doi.dedup.....24768adeef2891c4c1a3fe86a7ee3a87