Stable ferromagnetism in p -type carbon-doped ZnO nanoneedles

T. S. Herng, Shu Ping Lau, C. S. Wei, L. Wang, B. C. Zhao, M. Tanemura, Y. Akaike

Research output: Journal article publicationJournal articleAcademic researchpeer-review

40 Citations (Scopus)

Abstract

The authors report the synthesis and magnetic properties of carbon-doped ZnO (ZnO:C) nanoneedles. A saturated magnetic moment of 2.16 emu/cm3was found in the ZnO:C nanoneedles. The samples showed anomalous Hall effect and p -type conduction with a hole concentration of 1.8× 1018cm-3. The ferromagnetism in the ZnO:C nanoneedles could be attributed to C substitution on the O site which introduces hole, so the p-p interaction leads to the strong spin interaction between the C atoms and carriers. It was found that the ferromagnetism and p-type conduction in the ZnO:C nanoneedles were stable in ambient air over a period of 1 year and annealing temperature of up to 100 °C.
Original languageEnglish
Article number133103
JournalApplied Physics Letters
Volume95
Issue number13
DOIs
Publication statusPublished - 12 Oct 2009

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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