Effect of Interface Roughness on GMR in Fe/Cr Multilayers

Ajay Gupta*, Amitesh Paul, S. M. Chaudhari, D. M. Phase

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Effect of interfacial roughness on Giant Magnetoresistance (GMR) in Fe/Cr multilayers has been studied by simultaneously depositing multilayers on a set of float glass substrates prepared with varying rms surface roughness. Morphological and other microstructural features of different multilayers are similar except for the interfacial roughness, thus allowing one to separate out the effect of interface roughness. GMR measurements on these multilayers show that increasing interfacial roughness causes GMR to decrease nonlinearly. GMR tends to saturate to a constant value for higher interfacial roughnesses because of the fact that different multilayers differ mainly in the correlated part of interfacial roughness.

Original languageEnglish
Pages (from-to)2182-2187
Number of pages6
JournalJournal of the Physical Society of Japan
Volume69
Issue number7
DOIs
StatePublished - Jul 2000
Externally publishedYes

Keywords

  • Giant magnetoresistance
  • Interface structure and roughness
  • Magnetic films and multilayers

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