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L12 phase formation and giant exchange anisotropy in Mn3Ir/Co–Fe bilayers by Masakiyo Tsunoda; Ken-ichi Imakita; Mamiko Naka; Migaku Takahashi is a Materials Science article available to read on EtoBox.

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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 L1 2 -phase Mn 3 Ir 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/cm 2 .

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Author

Masakiyo Tsunoda; Ken-ichi Imakita; Mamiko Naka; Migaku Takahashi

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-8853)

Published

2006

Language

EN

Field

Materials Science (Physical Sciences)