Magnetic patterning of exchange-coupled multilayers

Demidov, Vladislav E.; Kholin, Dmitry I.; Demokritov, Sergej O.; Hillebrands, Burkard; Wegelin, Frederik; Marien, Jan
April 2004
Applied Physics Letters;4/12/2004, Vol. 84 Issue 15, p2853
Academic Journal
The local modification of antiferromagnetic (AF) interlayer exchange coupling by focused ion-beam irradiation has been studied experimentally in the epitaxial Fe/Cr/Fe(001) trilayer systems. Square ferromagnetic (FM) areas of 200×200 μm2 were created in the initially AF trilayer by ion irradiation with a fluence of 1015 ions/cm2. It was found, that in the range of the external magnetic field of about ±200 Oe, the change of magnetic properties at the boundaries separating FM and AF areas occurs within distances of less than 200 nm. This fact allows the use of the technique for magnetic patterning of antiferromagnetically coupled trilayers on the submicrometer scale. © 2004 American Institute of Physics.


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