Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/24939
Title: Growth and characterization of nonpolar, heavily Mn-substituted ZnO films
Authors: Shao, Q
Ku, PS
Wang, XL
Cheng, WF
Leung, CW 
Ruotolo, A
Issue Date: 2014
Publisher: American Institute of Physics
Source: Journal of applied physics, 2014, v. 115, no. 17, 17d703 How to cite?
Journal: Journal of applied physics 
Abstract: Eight percent of Mn was successfully diluted into nonpolar ZnO films deposited by pulsed laser deposition on single crystal (100) SrTiO3 substrates. X-ray diffraction patterns and energy-dispersive X-ray spectroscopy confirmed high crystallinity of the films and excluded unintentional magnetic doping. A unique surface domain structure was observed by scanning electron microscope and atomic force microscope, which might play a vital role to strain release induced by lattice mismatch between nonpolar (11-20) ZnO film and (100) SrTiO3 substrate. In addition, the films showed strong ferromagnetism with a large coercivity HC ∼180Oe at room temperature. The large magnetic moment is ascribed to carrier-mediated exchange interaction between the Mn ions, where the majority of the carriers are oxygen vacancies.
URI: http://hdl.handle.net/10397/24939
ISSN: 0021-8979
EISSN: 1089-7550
DOI: 10.1063/1.4862846
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