Magnetic Properties of Permalloy/Cu-Au Multilayers |
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| Authors: | F Stobiecki T Luciński B Szymański J Dubowik K Röll |
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| Institution: | (1) Institute of Molecular Physics, Polish Acad. Sci., ul. M. Smoluchowskiego 17, 60-179 Pozna , Poland;(2) University of Kassel, Heinrich-Plett-Str. 40, 34-132 Kassel, Germany |
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| Abstract: | The interlayer exchange coupling and GMR effect of (permalloy/Cu
x
Au1-x
)30 (Py = Ni83Fe17; 0.29 x0.75) sputtered multilayers (MLs) were investigated. The strength of the antiferromagnetic (AF) interlayer coupling J
AF was determined from M(H) and/or R(H) curves. GMR effect and AF coupling was found in entire investigated concentration range of Cu
x
Au1-x
. For x<0.65 the J
AF values at the first maximum of AF coupling (1.3t
Cu-Au1.6 nm) were smaller than 3×10-6 J/m2 and for x>0.65 J
AF increased to a value characteristic of Py/Cu MLs (J
AF 10-5 J/m2). The second maximum of AF coupling (J
AF10-7 J/m2) was only found for x0.75 at t
Cu-Au2.6 nm. |
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| Keywords: | magnetic interlayer exchange coupling giant magnetoresistance multilayers |
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