Effects of interparticle dipole interaction on permalloy thin film arrays

Jun Yang Lai, Mei Feng Lai, Ching Ray Chang, Zung Hang Wei, J. C. Wu, I. C. Lo, J. H. Kuo, Y. C. Chang, Jen Hwa Hsu, Jia Rui Huang

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The magnetic structures and hysteresis loops of permalloy thin film arrays are investigated here using magnetic force microscopy and vibrating sample magnetometer. The strength of interparticle dipole interaction can be revealed by the number of single-domain pairs with antiparallel magnetizations when the array is relaxed from a strong hard-axis field. Besides, hysteresis loops obtained by vibrating sample magnetometer measurements show that arrays with narrower interparticle spacings have lower coercivities and remanences. The results obtained from vibrating sample magnetometer are in very good agreement with magnetic force microscopy imaging.

Original languageEnglish
Article number10J504
JournalJournal of Applied Physics
Issue number10
Publication statusPublished - 2005 May 15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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