Strong temperature dependence of the 90° coupling in Fe/Al/Fe(001) magnetic trilayers

The temperature dependence of the unusual magnetic 90° coupling in epitaxial Fe/Al/Fe(001) trilayers has been determined. Trilayers with Al thickness near 15 Å exhibit a rapid decrease of coupling strength ( B 12) with increasing temperature. This temperature dependence is well described by the rela...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 1992-10, Vol.116 (3), p.L305-L310
Main Authors: Gutierrez, C.J., Krebs, J.J., Filipkowski, M.E., Prinz, G.A.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Metals. Metallurgy
Physics
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Summary:The temperature dependence of the unusual magnetic 90° coupling in epitaxial Fe/Al/Fe(001) trilayers has been determined. Trilayers with Al thickness near 15 Å exhibit a rapid decrease of coupling strength ( B 12) with increasing temperature. This temperature dependence is well described by the relations B 12 = B 0 12( 1 - T T 0 ) 2 or B 12 = B 0 12 exp( - T T 0 ) which contrast with the approximately linear temperature dependence previously reported for 180° coupled systems.
ISSN:0304-8853
DOI:10.1016/0304-8853(92)90106-X