Ferromagnetism in Ti-doped ZnO thin films

Q. Shao; C. Wang; J. A. Zapien; C. W. Leung; A. Ruotolo

doi:10.1063/1.4917514

Ferromagnetism in Ti-doped ZnO thin films

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Overview

25 Scopus Citations

Scopus Metrics

View graph of relations

Author(s)

Q. Shao
C. Wang
J. A. Zapien
C. W. Leung
A. Ruotolo

Related Research Unit(s)

Detail(s)

Original language	English
Article number	17B908
Journal / Publication	Journal of Applied Physics
Volume	117
Issue number	17
Publication status	Published - 7 May 2015

Link(s)

DOI	DOI https://doi.org/10.1063/1.4917514 Final Published version
	Check@CityULib
Attachment(s)	Documents 5914481.pdf Final Published version, 866 KB, PDF Publisher's Copyright Statement COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Q. Shao, C. Wang, J. A. Zapien, C. W. Leung, and A. Ruotolo , "Ferromagnetism in Ti-doped ZnO thin films", Journal of Applied Physics 117, 17B908 (2015) and may be found at https://doi.org/10.1063/1.4917514.
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84927740594&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(7a9944b9-3629-4038-bf3e-39aa61f23548).html

Abstract

We report our study on the origin of ferromagnetism in Ti-doped ZnO. A series of Ti doped ZnO films with increasing concentration of Ti dopant were grown and characterized in terms of structural, electrical, and magnetic properties. We found that Ti has a low solubility in the ZnO wurtzite structure. This favors stabilization of a large number of Zn vacancies, and theoretical calculations have shown that they can carry substantial magnetic moment. A carrier mediated exchange interaction between Zn vacancies is at the origin of the surprisingly high magnetic moment we measure in this compound.