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http://hdl.handle.net/10397/4237
| Title: | Magnetic properties of Mn doped ZnO tetrapod structures | Authors: | Roy, VAL Djurišić, AB Liu, H Zhang, XX Leung, YH Xie, MH Gao, J Lui, HF Surya, C |
Issue Date: | 2-Feb-2004 | Source: | Applied physics letters, 2 Feb. 2004, v. 84, no. 5, p. 756-758 | Abstract: | ZnO tetrapod nanostructures were prepared by evaporating Zn metal under humid argon flow. After the fabrication, Mn diffusion doping was performed at two different temperatures (600 and 800 °C). The samples were characterized by scanning electron microscopy, transmission electron microscopy, x-ray fluorescence, x-ray diffraction (XRD), superconducting quantum interference device magnetometer, and photoluminescence. Diffusion doping resulted in the increase of the size of tetrapods, but no new peaks were found in XRD spectrum. Mn doped ZnO tetrapod structures were found to be ferromagnetic with Curie temperature ∼50 K, and showed large coercive field (∼3500 Oe for 800 °C sample, ∼5500 Oe for 600 °C sample). | Keywords: | Zinc compounds II-VI semiconductors Wide band gap semiconductors Semiconductor doping Nanostructured materials Ferromagnetic materials Chemical interdiffusion Magnetic semiconductors Curie temperature Coercive force Scanning electron microscopy Transmission electron microscopy X-ray diffraction Photoluminescence |
Publisher: | American Institute of Physics | Journal: | Applied physics letters | ISSN: | 0003-6951 | EISSN: | 1077-3118 | DOI: | 10.1063/1.1645312 | Rights: | © 2004 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in V. A. L. Roy et al., Appl. Phys. Lett. 84, 756 (2004) and may be found at http://apl.aip.org/resource/1/applab/v84/i5/p756_s1 |
| Appears in Collections: | Journal/Magazine Article |
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| Roy_Magnetic_Mn_ZnO.pdf | 91.89 kB | Adobe PDF | View/Open |
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