Exchange bias and the origin of magnetism in Mn-doped ZnO tetrapods

R. K. Zheng, H. Liu, X. X. Zhang*, V. A.L. Roy, A. B. Djurišić

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

103 Scopus citations


The origin of magnetism and exchange bias of Mn-doped ZnO tetrapod nanostructures were investigated. The nanostructures were synthesized by evaporating Zn metal under humid argon flow and then Mn was doped into ZnO nanostructures by diffusion at 600°C. High-resolution transmission electron microscopy observations were used to investigate the existence of surface layers in the tetrapods. At 100 Oe field, the zero-field cooled (ZFC) and field cooled (FC) magnetizations of the sample nanostructures were determined. It was observed that the exchange bias in the sample was due to exchange interaction between ferrimagnetic phase in manganese oxides.

Original languageEnglish (US)
Pages (from-to)2589-2591
Number of pages3
JournalApplied Physics Letters
Issue number13
StatePublished - Sep 27 2004
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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