Magnetostriction and giant magnetoresistance in annealed NiFe/Ag multilayers

Y. K. Kim, S. C. Sanders

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Magnetostriction data are reported for NiFe/Ag multilayer thin films displaying giant magnetoresistance. Magnetostriction and magnetoresistance were measured as functions of annealing temperature for NiFe/Ag samples having different numbers of NiFe/Ag bilayers and Ag spacer thicknesses. They varied systematically with annealing temperature in a manner consistent with residual stress reduction and microstructural changes such as grain-boundary diffusion and grain growth. Zero magnetostriction concurrent with high magnetoresistance ratio (5%) and field sensitivity [7.5%/(kA/m) (0.6%/Oe)] was observed for an optimal multilayer configuration and annealing temperature. This combination of zero magnetostriction and high magnetoresistive response makes the NiFe/Ag multilayer system an attractive candidate for high-performance magnetic recording read-head sensors.

Original languageEnglish
Number of pages1
JournalApplied Physics Letters
DOIs
Publication statusPublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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