We report the correlated d0 ferromagnetism and photoluminescence in undoped single-crystalline ZnO nanowires synthesized by using a vapor transport method. We systematically tune the oxygen deficiency in the ZnO nanowires from 4% to 20% by adjusting the growth conditions, i.e., selecting different catalyst (Au or Ag) and varying the growth temperature. Our study suggests that oxygen vacancies induce characteristic photoluminescence and significantly boost the room-temperature ferromagnetism. Such undoped ZnO nanowires with tunable magnetic and optical properties are promising to find applications in multifunctional spintronic and photonic nanodevices.
|Original language||English (US)|
|Journal||Applied Physics Letters|
|State||Published - 2010|
Bibliographical noteFunding Information:
This work was supported by the Singapore Ministry of Education Research Grant (Grant Nos. SUG 20/06 and RG 46/07). G. Z. Xing acknowledges financial support from Singapore Millennium Foundation, Singapore.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)