Short-circuiting effect on the magnetoresistance of microstructured permalloy rings

C. T. Chao, L. K. Lin, J. C. Wu, Zung Hang Wei, Mei Feng Lai, Ching Ray Chang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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
Issue number2 SUPPL. PART 3
Publication statusPublished - 2007 Mar 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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