Nucleation of periodic domain structure in micro-fabricated spin valve strip pattern

K. Matsuyama, H. Asada, Y. Hosokawa, K. Taniguchi, K. Matsuyama

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Local magnetization reversal in a lithographically fabricated sub-um spin valve strip has been performed with spacially modulated magnetic fields, produced by overlaid parallel conductor lines with 5 urn line width and 5 urn separation. Evaporated spin valve of NiFe/Co/Cu/Co was used for the material. Nucleation of periodic domains in the soft magnetic layer was confirmed with the ratio of the current induced MR change to the whole MR change attained with an external field. The critical current densities required for the magnetization reversal were 15 and 23 mA/nm for strips with 0.4 and 0.2 |im width. The current induced magnetic field calculated from the critical current was 50 % larger than the external reverse field.

Original languageEnglish
Pages (from-to)1072-1074
Number of pages3
JournalIEEE Transactions on Magnetics
Volume34
Issue number4 PART 1
DOIs
Publication statusPublished - 1998

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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