Ferromagnetic (Mn, N)-codoped ZnO nanopillars array: Experimental and computational insights

Journal Article · Mon Jan 13 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4861936· OSTI ID:22275730

Wang, D. D.; Yan, Y. S. ^[1]; Li, S. ^[2]; Yan, F. ^[3]

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1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013 (China)
2. School of Materials Science and Engineering, The University of New South Wales, Sydney, New South Wales 2052 (Australia)
3. School of Engineering and Applied Science, Harvard University, Cambridge, Massachusetts 02138 (United States)

To reveal the mechanism responsible for ferromagnetism in transition metal and hole codoped oxide semiconductors, we carry out a comparative study on Mn-doped and (Mn, N)-codoped ZnO nanopillars. Compared with Mn-doped ZnO samples, (Mn, N)-codoped ZnO nanopillars exhibit an enhanced room temperature ferromagnetism. The modulation of bound magnetic polarons via Mn and N codoping corroborates the correlation between the ferromagnetism and hole carriers, which is also verified by first-principles density functional theory calculations. Our study suggests that the electronic band alteration as a result of codoping engineering plays a critical role in stabilizing the long-range magnetic orderings.

• OSTI ID: 22275730
• Journal Information: Applied Physics Letters, Vol. 104, Issue 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DENSITY FUNCTIONAL METHOD
DOPED MATERIALS
FERROMAGNETISM
MAGNETIZATION
SEMICONDUCTOR MATERIALS
TEMPERATURE RANGE 0273-0400 K
TRANSITION ELEMENTS
ZINC OXIDES