Abstract
ZnO nanorods with diameters of 15–30 nm were grown on Ag-coated Si substrates by catalyst-driven molecular beam epitaxy and then implanted with Mn+ or Co+ ions to doses of 1–5×1016 cm−2. After subsequent annealing at 700 °C for 5 min, the structural properties of the nanorods were unaffected, but they exhibited ferromagnetism that persisted to temperatures of 225–300 K. The coercive fields were ⩽100 Oe even at 10 K. The results are similar to those obtained for implantation of Mn+ or Co+ ions in bulk single-crystal ZnO and indicate promise for nanorods for nanoscale spintronic applications.
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Schedule a callMore From: Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena
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