Polarized neutron and X-ray reflectivity study of the structure and exchange coupling of permalloy(Ni80Fe20)/Cr/permalloy trilayers

Kuan Li Yu, Ming Zhe Lin, Chih Hao Lee, C. A. Ku, J. C.A. Huang, S. G.E. Te Velthuis

Research output: Contribution to journalConference article

3 Citations (Scopus)


The magnetic coupling between two permalloy layers with a Cr separating layer was studied using LMOKE, polarized neutron reflectivity and XRD. The coupling between two permalloy layers is antiferromagnetic-like when the Cr thickness is near 2.0 nm along the easy axis. A strong biquadratic coupling term has been found from the polarized neutron reflectivity study. The strong biquadratic coupling may be caused by the rough interface between the permalloy and Cr layers. The missing GMR effect of this system might be due to this strong biquadratic coupling of permalloy layers.

Original languageEnglish
Pages (from-to)151-156
Number of pages6
JournalPhysica B: Condensed Matter
Issue number1-2
Publication statusPublished - 2003 Aug 1
EventProceedings of the 7th SXNS - Lake Tahoe, CA, United States
Duration: 2002 Sep 232002 Sep 27


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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