Exchange coupling between Cr and ferromagnetic thin films
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Date
2003-05-15
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American Institute of Physics
Abstract
Exchange bias has been observed in Ni81Fe19/Cr bilayers. The exchange bias field for Cr thickness tCr larger than 62 Å increases with tCr and levels off at tCr=150 Å, whereas coercivity increases without saturation. The blocking temperature increases with the Cr thickness. Due to the presence of commensurate spin density waves in the thicker but strained Cr layers, blocking temperature as much as 425 K has been observed. Exchange bias has also been observed in Co/Cr bilayers.
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Keywords
exchange interactions (electron), ferromagnetic materials, iron alloys, magnetic thin films, nickel alloys, spin density waves, ferromagnetic thin film, Ni81Fe19/Cr bilayer, exchange coupling, blocking temperature, commensurate spin density wave, Ni81Fe19-Cr, chromium
Citation
Journal of Applied Physics 15 May 2003, vol.93, no.10, pp. 6829-31