Thickness dependence of interlayer fringe-field coupling in submicrometer NiFe/Cu multilayered pillars

M. Zhang, Yukio Nozaki, K. Matsuyama

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The effect of fringe-field coupling on the magnetization reversal process in submicrometer scale giant magnetoresistive pillars consisting of [NiFe/Cu]6 has been investigated by means of current perpendicular to plane magnetoresistance measurements and numerical simulations. The parabolic and reversible magnetoresistance curves due to an opposite rotation of magnetization in neighboring NiFe layers were observed. To explain the field sensitivity of the pillars quantitatively, we have proposed a modified single-domain model, where the magnetic energy of the system is reconstructed using the result of the micromagnetic simulation of a magnetostatically coupled bilayer system. The calculated magnetoresistance curves are consistent with the experimental ones. From the calculated results, the amplitude of the saturation field is found to be proportional to the thickness of the ferromagnetic layer and inversely proportional to the square root of the nonmagnetic layer thickness.

Original languageEnglish
Pages (from-to)2583-2585
Number of pages3
JournalIEEE Transactions on Magnetics
Volume41
Issue number10
DOIs
Publication statusPublished - 2005 Oct
Externally publishedYes

Fingerprint

Magnetoresistance
interlayers
Magnetization reversal
magnetization
curves
Magnetization
simulation
saturation
Computer simulation
energy

Keywords

  • Current perpendicular to plane (CPP)-giant magnetoresistance (GMR)
  • Magnetization reversal
  • Magnetostatic coupling
  • Micromagnetic simulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Thickness dependence of interlayer fringe-field coupling in submicrometer NiFe/Cu multilayered pillars. / Zhang, M.; Nozaki, Yukio; Matsuyama, K.

In: IEEE Transactions on Magnetics, Vol. 41, No. 10, 10.2005, p. 2583-2585.

Research output: Contribution to journalArticle

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