Saturation magnetization of ultra-thin Ni-20 at%Fe layers in Ni-Fe/Cu multilayers

Ryoichi Nakatani, Akimasa Sakuma, Yutaka Sugita

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

Saturation magnetizations in Ni-20 at% Fe/Cu multilayers with Ni-Fe layers of 0.2-2.0 nm in thickness have been investigated experimentally and theoretically. The saturation magnetization 4πMs of the Ni-Fe layers was around 10 kG at room temperature, when the thickness of the Ni-Fe layers was above 1.6 nm. Below 1.6 nm, the 4πMs decreased as the thickness decreased, and became 0 kG at 0.2-0.3 nm. The 4πMs at liquid-He temperature also decreased with decreasing thickness below 1.6 nm. However, the 4πMs was relatively high even at 0.5-0.6 nm, and low but not 0 kG at 0.2-0.3 nm, compared with the 4πMs at room temperature. Magnetic moments of the Ni-Fe layers have been calculated based on linear muffin-tin orbital method, and were significantly higher than the measured values at liquid-He temperature.

Original languageEnglish
Pages (from-to)300-302
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume198
DOIs
Publication statusPublished - 1999 Jun 1
Externally publishedYes
EventProceedings of the 1998 3rd International Symposium on Metallic Multilayers (MML-98) - Vancouver, BC, Can
Duration: 1998 Jun 141998 Jun 19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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