This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1063/1.5145337 in citations.
Please use the identifier: http://hdl.handle.net/2128/25701 in citations.
Magnetic quantification of single-crystalline Fe and Co nanowires via off-axis electron holography
Magnetic quantification of single-crystalline Fe and Co nanowires via off-axis electron holography
Investigating the local micromagnetic structure of ferromagnetic nanowires (NWs) at the nanoscale is essential to study the structure–property relationships and can facilitate the design of nanostructures for technology applications. Herein, we synthesized high-quality iron and cobalt NWs and invest...
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Personal Name(s): | Chai, Ke |
---|---|
Li, Zikang (Corresponding author) / Huang, Wenting / Richter, Gunther / Liu, Ruibin / Zou, Bingsuo / Caron, Jan / Kovács, András / Dunin-Borkowski, Rafal E. / Li, Jianqi | |
Contributing Institute: |
Mikrostrukturforschung; PGI-5 Physik Nanoskaliger Systeme; ER-C-1 |
Published in: | The journal of chemical physics, 152 (2020) 11, S. 114202 - |
Imprint: |
Melville, NY
American Institute of Physics
2020
|
DOI: |
10.1063/1.5145337 |
PubMed ID: |
32199423 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena |
Link: |
Published on 2020-03-20. Available in OpenAccess from 2021-03-20. Published on 2020-03-20. Available in OpenAccess from 2021-03-20. Published on 2020-03-20. Available in OpenAccess from 2021-03-20. |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/25701 in citations.
Investigating the local micromagnetic structure of ferromagnetic nanowires (NWs) at the nanoscale is essential to study the structure–property relationships and can facilitate the design of nanostructures for technology applications. Herein, we synthesized high-quality iron and cobalt NWs and investigated the magnetic properties of these NWs using off-axis electron holography. The Fe NWs are about 100 nm in width and a few micrometers in length with a preferential growth direction of [100], while the Co NWs have a higher aspect-ratio with preferential crystal growth along the [110] direction. It is noted that compact passivation surface layers of oxides protect these NWs from further oxidation, even after nearly two years of exposure to ambient conditions; furthermore, these NWs display homogeneous ferromagnetism along their axial direction revealing the domination of shape anisotropy on magnetic behavior. Importantly, the average value of magnetic induction strengths of Fe NWs (2.07 {±} 0.10 T) and Co NWs (1.83 {±} 0.15 T) is measured to be very close to the respective theoretical value, and it shows that the surface oxide layers do not affect the magnetic moments in NWs. Our results provide a useful synthesis approach for the fabrication of single-crystalline, defect-free metal NWs and give insight into the micromagnetic properties in ferromagnetic NWs based on the transmission electron microscopy measurements. |