科研之友
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摘要
We demonstrate the formation of superparamagnetic/ ferromagnetic regions within ZnO(0001) single crystals sequentially implanted with B and Co. While the preimplantation with B plays a minor role for the electrical transport properties, its presence leads to the formation of amorphous phases. Moreover, B acts strongly, reducing the implanted Co. Thus, the origin of the ferromagnetic ordering in local clusters with large Co concentration is itinerant d-electron as in the case of metallic Co. The amorphous Co-based phases are nondetectable by common x-ray diffraction.
- 出版日期2009-6-15
