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.
@article{arxiv.0908.3488,
title = {Spinel ferrite nanocrystals embedded inside ZnO: magnetic, electronic and magneto-transport properties},
author = {Shengqiang Zhou and K. Potzger and Qingyu Xu and K. Kuepper and G. Talut and D. Marko and A. Muecklich and M. Helm and J. Fassbender and E. Arenholz and H. Schmidt},
journal= {arXiv preprint arXiv:0908.3488},
year = {2009}
}
Comments
12 pages, 14 figs. accepted for publication at PRB