Abstract
The degree of order S of Mn-Ir layers and the exchange anisotropy of Mn-Ir/Co-Fe bilayers were investigated for various chemical compositions of Mn-Ir layers, underlayer materials, and underlayer thicknesses. It was found that: (1) The compositional range over which L12-phase Mn3Ir could be formed is 22-32 at% Ir and giant exchange anisotropy is obtained in this range. (2) Ru is favorable as an underlayer material for avoiding interdiffusion with the Mn-Ir layer during deposition on the temperature elevated substrate. (3) The underlayer thickness could be reduced to 5 nm while maintaining a giant exchange anisotropy in excess of 1 erg/cm2.
Original language | English |
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Pages (from-to) | 55-59 |
Number of pages | 5 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 304 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2006 Sep |
Keywords
- Antiferromagnet
- Exchange anisotropy
- Exchange bias
- Ordered alloy
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics