Spinel ferrite nanocrystals embedded inside ZnO: magnetic, electronic and magneto-transport properties

Details Spinel ferrite nanocrystals embedded inside ZnO: magnetic, electronic and magneto-transport properties Spinel ferrite nanocrystals embedded inside ZnO: magnetic, electronic and magneto-transport properties

2009-08-24

arxiv.org/abs/0908.3488v1

Phys. Rev. B 80, 094409 (2009)

Physics

Condensed Matter

Materials Science

12 pages, 14 figs. accepted for publication at PRB

Scientific paper

10.1103/PhysRevB.80.094409

In this paper we show that spinel ferrite nanocrystals (NiFe2O4, and CoFe2O4) can be texturally embedded inside a ZnO matrix by ion implantation and post-annealing. The two kinds of ferrites show different magnetic properties, e.g. coercivity and magnetization. Anomalous Hall effect and positive magnetoresistance have been observed. Our study suggests a ferrimagnet/semiconductor hybrid system for potential applications in magneto-electronics. This hybrid system can be tuned by selecting different transition metal ions (from Mn to Zn) to obtain various magnetic and electronic properties.

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