Abstract
Large-scale monocrystalline oxide-diluted magnetic semiconductor (ODMS) Zn1−x Bi x O nanorods arrays (NAs) were prepared within a large doping concentration range from 5% to 20% by a simple chemical vapor deposition. X-ray diffraction and high-resolution transmission electron microscopy reveal the monotonous expansion of the lattice constants with increasing Bi content, due to the effective Bi doping. In particular, room-temperature ferromagnetic (RTFM) behavior with Curie temperature over 363.7 K has been observed based on Bi-doped ZnO nanoarrays, whereas undoped ZnO NAs disappear. The RTFM origin is suggested, in which vacancies can be controlled to tune the FM. The as-formed RTFM NAs would have potential applications in many areas of advanced nanotechnology, such as new spintronic devices and magneto-optic components.
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Zhou, S., Liu, L., Lou, S. et al. Room-temperature ferromagnetism of diamagnetically-doped ZnO aligned nanorods fabricated by vapor reaction. Appl. Phys. A 102, 367–371 (2011). https://doi.org/10.1007/s00339-010-6011-7
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DOI: https://doi.org/10.1007/s00339-010-6011-7