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

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.
Authors:
;  [1] ; ;  [2] ;  [3]
  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)
Publication Date:
OSTI Identifier:
22275730
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DENSITY FUNCTIONAL METHOD; DOPED MATERIALS; FERROMAGNETISM; MAGNETIZATION; SEMICONDUCTOR MATERIALS; TEMPERATURE RANGE 0273-0400 K; TRANSITION ELEMENTS; ZINC OXIDES