Origin of biquadratic exchange in fe/si/fe.
نویسندگان
چکیده
The thickness and temperature dependences of the interlayer exchange coupling in well-defined molecular beam epitaxy-grown Fe/Si/Fe sandwich structures have been studied. The biquadratic coupling shows a strong temperature dependence in contrast to the bilinear coupling. Both depend exponentially on thickness. These observations can be well understood in the framework of Slonczewski's loose spins model [J. Appl. Phys. 73, 5957 (1993)]. No bilinear contribution of the loose spins to the coupling was observed.
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ورودعنوان ژورنال:
- Physical review letters
دوره 84 8 شماره
صفحات -
تاریخ انتشار 2000