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, Jung-Chun Huang, S. G.E. Te Velthuis

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

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
Volume336
Issue number1-2
DOIs
Publication statusPublished - 2003 Aug 1
EventProceedings of the 7th SXNS - Lake Tahoe, CA, United States
Duration: 2002 Sep 232002 Sep 27

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Exchange coupling
Permalloys (trademark)
Neutrons
reflectance
neutrons
X rays
Magnetic couplings
x rays

All Science Journal Classification (ASJC) codes

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

Cite this

Yu, Kuan Li ; Lin, Ming Zhe ; Lee, Chih Hao ; Ku, C. A. ; Huang, Jung-Chun ; Te Velthuis, S. G.E. / Polarized neutron and X-ray reflectivity study of the structure and exchange coupling of permalloy(Ni80Fe20)/Cr/permalloy trilayers. In: Physica B: Condensed Matter. 2003 ; Vol. 336, No. 1-2. pp. 151-156.
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abstract = "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.",
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Polarized neutron and X-ray reflectivity study of the structure and exchange coupling of permalloy(Ni80Fe20)/Cr/permalloy trilayers. / Yu, Kuan Li; Lin, Ming Zhe; Lee, Chih Hao; Ku, C. A.; Huang, Jung-Chun; Te Velthuis, S. G.E.

In: Physica B: Condensed Matter, Vol. 336, No. 1-2, 01.08.2003, p. 151-156.

Research output: Contribution to journalConference article

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AU - Huang, Jung-Chun

AU - Te Velthuis, S. G.E.

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AB - 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.

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