Tailoring the coercivity in ferromagnetic ZnO thin films by 3d and 4f elements codoping
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Date
2014
Journal Title
Journal ISSN
Volume Title
Publisher
AIP Scitation
Abstract
Cluster free, Co (3d) and Eu (4f) doped ZnO thin films were prepared using ion implantation technique accompanied by post annealing treatments. Compared with the mono-doped ZnO thin films, the samples codoped with Co and Eu exhibit a stronger magnetization with a giant coercivity of 1200 Oe at ambient temperature. This was further verified through x-ray magnetic circular dichroism analysis, revealing the exchange interaction between the Co 3d electrons and the localized carriers induced by Eu3+ ions codoping. The insight gained with modulating coercivity in magnetic oxides opens up an avenue for applications requiring non-volatility in spintronic devices. © 2014, AIP Publishing LLC.
Description
Keywords
Thin films, Magnetization, Ions, Coercive force, Electron beams, Oxides
Citation
Lee, J. J., Xing, G. Z., Yi, J. B., Chen, T., Ionescu, M., & Li, S. (2014). Tailoring the coercivity in ferromagnetic ZnO thin films by 3d and 4f elements codoping. Applied Physics Letters, 104(1), 012405. doi:10.1063/1.4861165