Chemical states and ferromagnetism in heavily Mn-substituted zinc oxide thin films

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

11 Scopus Citations
View graph of relations

Author(s)

  • Q. Shao
  • P. S. Ku
  • C. W. Leung
  • F. Borgatti
  • A. Gambardella
  • V. Dediu
  • R. Ciprian

Detail(s)

Original languageEnglish
Article number153902
Journal / PublicationJournal of Applied Physics
Volume115
Issue number15
Online published17 Apr 2014
Publication statusPublished - 21 Apr 2014

Abstract

A concentration of Manganese as high as 8% was successfully diluted into Zinc Oxide epitaxial films deposited by pulsed laser deposition. The films showed strong ferromagnetism with a large coercivity. Low temperature X-ray absorption spectroscopy measurements indicated that all the Manganese ions substitute for Zinc sites of the wurtzite lattice in the valency of +2. Photoluminescence measurements excluded the presence of Zinc vacancies, as well as Zn interstitials. All the magnetic moments measured were to ascribe to the formation of bound magnetic polarons, with no other contribution due to Manganese-secondary phases or Zinc vacancy-mediated double exchange interaction. © 2014 AIP Publishing LLC.

Citation Format(s)

Chemical states and ferromagnetism in heavily Mn-substituted zinc oxide thin films. / Shao, Q.; Ku, P. S.; Wang, X. L.; Zapien, J. A.; Leung, C. W.; Borgatti, F.; Gambardella, A.; Dediu, V.; Ciprian, R.; Ruotolo, A.

In: Journal of Applied Physics, Vol. 115, No. 15, 153902, 21.04.2014.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal