Enhanced interfacial magnetic coupling of Gd /Fe multilayers.
نویسندگان
چکیده
The spatial extent zeta(AFM) and strength J(AFM) of the antiferromagnetic (AFM) exchange coupling at buried Gd /Fe interfaces in ferrimagnetic [Gd(50 A)Fe(15,35 A)](15) sputtered multilayers is obtained from combined x-ray resonance magnetic reflectivity and magnetic circular dichroism measurements. zeta(AFM) is 4.1(7) A or approximately 1-2 interatomic distances in bulk Gd and Fe; J(AFM) is 1050(90) K, comparable to the ferromagnetic exchange in bulk Fe.
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ورودعنوان ژورنال:
- Physical review letters
دوره 87 20 شماره
صفحات -
تاریخ انتشار 2001