Alternating magnetic field assisted magnetization reversal in ferromagnetic antidot

Hao Ting Huang, Tzong Rong Ger, Chen Yu Huang, Kuei Tien Liao, Pei Jen Wang, Jun Yang Lai, Jiann Yeu Chen, Mei Feng Lai

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Although the effects of high-frequency electromagnetic waves on magnetization reversal have been extensively studied, the influence of a low-frequency ac field on magnetization reversal has seldom been examined. In this study, we measured the magnetoresistance and examined the magnetic switching process of Permalloy antidot thin films under an alternating magnetic field with a frequency of 25 kHz. When no alternating magnetic field was present, the transitional field of the antidot thin films decreased as the angle of the direct magnetic field increased. When an alternating magnetic field was present, the transitional field exhibited the same trend. We compared the magnetization process of the antidot thin films with and without the alternating magnetic field and determined that the alternating field can facilitate the transition of magnetization, specifically, by lowering the transitional field with the highest variation rate (33.73%).

Original languageEnglish
Article number17B906
JournalJournal of Applied Physics
Volume115
Issue number17
DOIs
Publication statusPublished - 2014 May 7

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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