Fabrication and characterization of multi-walled carbon nanotube incorporated ferromagnetic nanowires with self-formed anti-oxidation layers
| Autor: | Soon-cheol Kweon, Sang Woo Kim |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Materials science
Annealing (metallurgy) Mechanical Engineering Alloy Nanowire Nanotechnology Carbon nanotube engineering.material Coercivity Condensed Matter Physics law.invention Magnetic anisotropy Ferromagnetism Mechanics of Materials law engineering General Materials Science Composite material Single domain |
| Zdroj: | Materials Research Bulletin. 48:948-954 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2012.11.055 |
| Popis: | Ferromagnetic FeCoNi alloy nanowires (NWs) with self-formed anti-oxidation (Si/Al) layers were prepared via electrospinning a sol–gel precursor solution containing Si and Al element and multi-walled carbon nanotubes (MWNTs), and their structures and magnetic properties were investigated. The uniform and narrow-sized MWNTs-magnetic alloy NWs with a well-crystallized bcc (1 1 0) texture of FeCo along the easy axis were formed by introduction of MWNTs acted as a sintering inhibitor during annealing. The coercive field at room temperature increased two times higher than that of MWNT-free magnetic NWs due to the well-developed texture and the small grain size, which is slightly larger than the single domain size within the 10–15 nm range for most magnetic metals. As a result, the highly enhanced ferromagnetic NW mats with a MWNT-incorporated nanowire structure have shown great promise for providing a wide range of potential applications, including magnetic recording and ultrahigh-density magnetic storage devices operating room temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect