Abstract
Co/Cu multilayer nanowires fabricated in an array using anodized aluminium oxide (AAO) template has been investigated. Experimental conditions are optimized to fabricate Co/Cu multilayer systems with fixed Cu and variable Co layer thicknesses. Magnetization reversal mode is found to depend on the Co layer thickness. A transition occurs from coherent rotation to a combination of coherent and curling rotation at around t(Co)=60 nm with increasing t(Co). The reversal modes have been investigated using the magnetic hysteresis loops measured at room temperature for Co/Cu nanowires placed at various angles between the directions of the nanowire axis and external fields using a vibrating sample magnetometer. The magnetic easy axis changes from the direction perpendicular to nanowires to that parallel to the nanowires at around t (Co)=60 nm, indicating a change in the magnetization reversal mode. The reversal mode for the nanowires with thin disk-shaped Co layers is of a coherent rotation type, while that for long rod-shaped Co layers can be explained by a combination of coherent rotation and a curling mode.
| Original language | English |
|---|---|
| Article number | 5257089 |
| Pages (from-to) | 4033-4036 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 45 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2009 Oct 1 |
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Keywords
- Coercivity
- Magnetization reversal
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
Cite this
Fabrication and magnetization reversal processes for Co/Cu multilayer nanowires. / Sharif, R.; Zhang, X. Q.; Rahman, M. K.; Shamaila, S.; Chen, J. Y.; Han, X. F.; Kim, Young-geun.
In: IEEE Transactions on Magnetics, Vol. 45, No. 10, 5257089, 01.10.2009, p. 4033-4036.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication and magnetization reversal processes for Co/Cu multilayer nanowires
AU - Sharif, R.
AU - Zhang, X. Q.
AU - Rahman, M. K.
AU - Shamaila, S.
AU - Chen, J. Y.
AU - Han, X. F.
AU - Kim, Young-geun
PY - 2009/10/1
Y1 - 2009/10/1
N2 - Co/Cu multilayer nanowires fabricated in an array using anodized aluminium oxide (AAO) template has been investigated. Experimental conditions are optimized to fabricate Co/Cu multilayer systems with fixed Cu and variable Co layer thicknesses. Magnetization reversal mode is found to depend on the Co layer thickness. A transition occurs from coherent rotation to a combination of coherent and curling rotation at around t(Co)=60 nm with increasing t(Co). The reversal modes have been investigated using the magnetic hysteresis loops measured at room temperature for Co/Cu nanowires placed at various angles between the directions of the nanowire axis and external fields using a vibrating sample magnetometer. The magnetic easy axis changes from the direction perpendicular to nanowires to that parallel to the nanowires at around t (Co)=60 nm, indicating a change in the magnetization reversal mode. The reversal mode for the nanowires with thin disk-shaped Co layers is of a coherent rotation type, while that for long rod-shaped Co layers can be explained by a combination of coherent rotation and a curling mode.
AB - Co/Cu multilayer nanowires fabricated in an array using anodized aluminium oxide (AAO) template has been investigated. Experimental conditions are optimized to fabricate Co/Cu multilayer systems with fixed Cu and variable Co layer thicknesses. Magnetization reversal mode is found to depend on the Co layer thickness. A transition occurs from coherent rotation to a combination of coherent and curling rotation at around t(Co)=60 nm with increasing t(Co). The reversal modes have been investigated using the magnetic hysteresis loops measured at room temperature for Co/Cu nanowires placed at various angles between the directions of the nanowire axis and external fields using a vibrating sample magnetometer. The magnetic easy axis changes from the direction perpendicular to nanowires to that parallel to the nanowires at around t (Co)=60 nm, indicating a change in the magnetization reversal mode. The reversal mode for the nanowires with thin disk-shaped Co layers is of a coherent rotation type, while that for long rod-shaped Co layers can be explained by a combination of coherent rotation and a curling mode.
KW - Coercivity
KW - Magnetization reversal
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UR - http://www.scopus.com/inward/citedby.url?scp=70350586873&partnerID=8YFLogxK
U2 - 10.1109/TMAG.2009.2026286
DO - 10.1109/TMAG.2009.2026286
M3 - Article
AN - SCOPUS:70350586873
VL - 45
SP - 4033
EP - 4036
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 10
M1 - 5257089
ER -