Magnetic properties of NiO and (Ni, Zn)O nanoclusters

M. A. Peck, Y. Huh, R. Skomski, R. Zhang, P. Kharel, M. D. Allison, D. J. Sellmyer, M. A. Langell

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Rock-salt NiO and Ni0.7Zn0.3O nanoparticles were investigated by x-ray diffraction, atomic-force microscopy, and magnetic measurements. Nanoparticle diameters varied from 8 to 30 nm depending on reaction conditions. There are two main magnetization contributions, the field-induced spin canting of the antiferromagnetic sublattices and the magnetization rotation caused by uncompensated spins interacting with the magnetic field. The former is a bulk effect, modified by the presence of Zn, whereas the latter is a nanoscale effect that increases with decreasing particle size. The relative contributions of the two effects depend on particle size with a critical size of about 18 nm resulting in bulklike behavior.

Original languageEnglish (US)
Article number07B518
JournalJournal of Applied Physics
Volume109
Issue number7
DOIs
StatePublished - Apr 1 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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