Ferromagnetism in Fe-implanted a-plane ZnO films

P. Wu, G. Saraf, Y. Lu, D. H. Hill, R. Gateau, L. Wielunski, R. A. Bartynski, D. A. Arena, J. Dvorak, A. Moodenbaugh, T. Siegrist, J. A. Raley, Yung Kee Yeo

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


Fe ions of dose 5 × 10 16 cm -2 were implanted at 200 keV into a-plane ZnO epitaxial films. The epitaxial quality of the postannealed samples was verified by x-ray diffraction ω-rocking curves and φ scans, whereas x-ray absorption spectroscopy identified the presence of both Fe 2+ and Fe 3+ ions, as well as changes in their relative concentration during postannealing. Superconducting quantum interference device measurements show that the as-implanted and postannealed films are ferromagnetic at room temperature. The saturation magnetization reduces during annealing possibly due to the decrease in the number of oxygen vacancies.

Original languageEnglish (US)
Article number012508
JournalApplied Physics Letters
Issue number1
StatePublished - 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Ferromagnetism in Fe-implanted a-plane ZnO films'. Together they form a unique fingerprint.

Cite this