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.
CITATION STYLE
Ip, K., Frazier, R. M., Heo, Y. W., Norton, D. P., Abernathy, C. R., Pearton, S. J., … Wilson, R. G. (2003). Ferromagnetism in Mn- and Co-implanted ZnO nanorods. Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 21(4), 1476–1481. https://doi.org/10.1116/1.1585069
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