摘要：

The 3d transition metals and alloys exist in a variety of crystallographic and magnetic phases. Thin-film growth of these materials on semiconductor substrates can drive the films into specific crystalline structures. These structures may be in a thermodynamically stable phase, a known high-pressure or high-temperature phase, or even a phase not previously observed. They greatly increase the variety of magnetic materials by essentially making "new" materials from "old" elements. In this talk I am going to focus the important role played by interface chemistry in such systems and its correlation to ultrathin film magnetism of 3d metals and alloys on GaAs(OOl).

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