Abstract
A microstructured permalloy ellipse with six equally spaced nonmagnetic voltage leads has been studied through magnetoresistance measurements and magnetic force microscopy. The aspect ratio and film thickness of the element having three vortices of magnetic configuration were accordingly designed and fabricated using electron-beam lithography through a lift off process. Magnetoresistance curves measured with various pairs of voltage leads have revealed a local magnetic-moment reversal. Two magnetoresistance kinks observed with decreasingincreasing field strength can be attributed to the vortex formationannihilation, which was confirmed by magnetic force microscopy and micromagnetic simulation. The motion of the vortex core driven by the transverse external magnetic field was estimated to be 4.1 nmOe.
| Original language | English |
|---|---|
| Article number | 10M102 |
| Journal | Journal of Applied Physics |
| Volume | 97 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2005 May 15 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)
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Probing the local magnetization reversal through magnetoresistance measurement. / Lo, I. C.; Wu, Jong-Ching; Horng, Lance; Wei, Zung Hang; Lai, Mei Fang; Chang, C. R.
In: Journal of Applied Physics, Vol. 97, No. 10, 10M102, 15.05.2005.Research output: Contribution to journal › Article
TY - JOUR
T1 - Probing the local magnetization reversal through magnetoresistance measurement
AU - Lo, I. C.
AU - Wu, Jong-Ching
AU - Horng, Lance
AU - Wei, Zung Hang
AU - Lai, Mei Fang
AU - Chang, C. R.
PY - 2005/5/15
Y1 - 2005/5/15
N2 - A microstructured permalloy ellipse with six equally spaced nonmagnetic voltage leads has been studied through magnetoresistance measurements and magnetic force microscopy. The aspect ratio and film thickness of the element having three vortices of magnetic configuration were accordingly designed and fabricated using electron-beam lithography through a lift off process. Magnetoresistance curves measured with various pairs of voltage leads have revealed a local magnetic-moment reversal. Two magnetoresistance kinks observed with decreasingincreasing field strength can be attributed to the vortex formationannihilation, which was confirmed by magnetic force microscopy and micromagnetic simulation. The motion of the vortex core driven by the transverse external magnetic field was estimated to be 4.1 nmOe.
AB - A microstructured permalloy ellipse with six equally spaced nonmagnetic voltage leads has been studied through magnetoresistance measurements and magnetic force microscopy. The aspect ratio and film thickness of the element having three vortices of magnetic configuration were accordingly designed and fabricated using electron-beam lithography through a lift off process. Magnetoresistance curves measured with various pairs of voltage leads have revealed a local magnetic-moment reversal. Two magnetoresistance kinks observed with decreasingincreasing field strength can be attributed to the vortex formationannihilation, which was confirmed by magnetic force microscopy and micromagnetic simulation. The motion of the vortex core driven by the transverse external magnetic field was estimated to be 4.1 nmOe.
UR - http://www.scopus.com/inward/record.url?scp=21044447420&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=21044447420&partnerID=8YFLogxK
U2 - 10.1063/1.1847293
DO - 10.1063/1.1847293
M3 - Article
AN - SCOPUS:21044447420
VL - 97
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 10
M1 - 10M102
ER -