Short-circuiting effect on the magnetoresistance of microstructured permalloy rings

C. T. Chao, Lin Lin, Jong-Ching Wu, Zung Hang Wei, Mei Feng Lai, Ching Ray Chang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We present a systematic investigation of the current/voltage lead effect on magnetization reversal of microstructured permalloy rings. The magnetic rings with film thickness of 23 nm and outer/inner diameter of 5/3 μm, respectively, were patched by nonmagnetic gold leads designed with various angles, 10°, 20°, and 30°. Longitudinal magnetoresistance measurement was adopted to demonstrate the short-circuiting effect. The mechanism can be attributed to the formation of the vortex structures developed beneath the lead-covered areas, in which the vortex pair domain configuration was confirmed using a magnetic force microscopy.

Original languageEnglish
Pages (from-to)1986-1988
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 3
DOIs
Publication statusPublished - 2007 Mar 1

Fingerprint

Permalloys (trademark)
Magnetoresistance
Vortex flow
vortices
Magnetic force microscopy
Magnetization reversal
magnetic force microscopy
rings
Gold
Film thickness
film thickness
Lead
gold
magnetization
Electric potential
electric potential
configurations

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Chao, C. T. ; Lin, Lin ; Wu, Jong-Ching ; Wei, Zung Hang ; Lai, Mei Feng ; Chang, Ching Ray. / Short-circuiting effect on the magnetoresistance of microstructured permalloy rings. In: Journal of Magnetism and Magnetic Materials. 2007 ; Vol. 310, No. 2 SUPPL. PART 3. pp. 1986-1988.
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Short-circuiting effect on the magnetoresistance of microstructured permalloy rings. / Chao, C. T.; Lin, Lin; Wu, Jong-Ching; Wei, Zung Hang; Lai, Mei Feng; Chang, Ching Ray.

In: Journal of Magnetism and Magnetic Materials, Vol. 310, No. 2 SUPPL. PART 3, 01.03.2007, p. 1986-1988.

Research output: Contribution to journalArticle

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AU - Chang, Ching Ray

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