Sample preparation and annealing effects on the ferromagnetism in Mn-doped ZnO

Jun Zhang, R. Skomski, David J Sellmyer

Research output: Contribution to journalArticle

97 Citations (Scopus)

Abstract

Magnetic properties of Mn-doped ZnO strongly depend on sample preparation and annealing. While the samples sintered in air at 500 °C show ferromagnetism at room temperature, those sintered at 900 °C are paramagnetic. The samples sintered in vacuum show a ferromagnetic transition at 45 K, which is attributed to ferrimagnetic Mn3 O4. With an increase of annealing temperature, the ferromagnetism observed at room temperature in the low-temperature-sintered samples is gradually suppressed and finally completely removed. These results can be understood by considering a metastable ferromagnetic phase and its stability under varying temperatures and atmospheres.

Original languageEnglish (US)
Article number10D303
JournalJournal of Applied Physics
Volume97
Issue number10
DOIs
StatePublished - May 15 2005

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ferromagnetism
preparation
annealing
room temperature
magnetic properties
atmospheres
vacuum
temperature
air

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Sample preparation and annealing effects on the ferromagnetism in Mn-doped ZnO. / Zhang, Jun; Skomski, R.; Sellmyer, David J.

In: Journal of Applied Physics, Vol. 97, No. 10, 10D303, 15.05.2005.

Research output: Contribution to journalArticle

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