Size-Dependent Multi- to Single Domain Transition of UV Laser-Driven Ferromagnetic Co Nanoparticles Under External Magnetic Field
- Title
- Size-Dependent Multi- to Single Domain Transition of UV Laser-Driven Ferromagnetic Co Nanoparticles Under External Magnetic Field
- Author
- 홍진표
- Keywords
- Nanoparticle; Ferromagnet; UV Laser
- Issue Date
- 2014-11
- Publisher
- American Scientific Publishers
- Citation
- Journal of nanoscience and nanotechnology, 2014, 15(6), P.4587-4590
- Abstract
- he magnetic domain of cobalt (Co) nanoparticles (NPs) was studied as a function of particle size. Various single crystalline and uniform Co NPs were prepared using a novel UV laser irradiation technique on ultra thin Co films under an external applied magnetic field. Structural and magnetic characteristics were analyzed with transmission electron microscopy and superconducting quantum interference devices. The experimental observations indicate that during Co NP growth, externally applied magnetic fields and size-dependent NP surface effects strongly facilitate multi-to-single domain transition at a critical diameter of about 10 nm, an extremely small NP size that is suitable for higher density storage applications.
- URI
- http://www.ingentaconnect.com/content/asp/jnn/2015/00000015/00000006/art00078http://hdl.handle.net/20.500.11754/53257
- ISSN
- 1533-4880; 1533-4899
- DOI
- 10.1166/jnn.2015.9779
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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