Structural and ferromagnetic properties in Mn implanted, p-type Si were investigated. High resolution structural analysis techniques like synchrotron X-ray diffraction revealed the formation of MnSi1.7 nanoparticles already in the as implanted samples. Depending on the Mn-fluence, the size increases from 5 nm to 20 nm upon rapid thermal annealing. No significant evidence is found for Mn substituting Si sites either in the as-implanted or annealed samples. The observed ferromagnetism yields a saturation moment of 0.21 mu_B per implanted Mn at 10 K, which could be assigned to MnSi1.7 nanoparticles as revealed by a temperature dependent magnetization measurement.
@article{arxiv.cond-mat/0612612,
title = {Structural and magnetic properties of Mn-implanted Si},
author = {Shengqiang Zhou and K. Potzger and Gufei Zhang and A. Muecklich and F. Eichhorn and N. Schell and R. Groetzschel and B. Schmidt and W. Skorupa and M. Helm and J. Fassbender and D. Geiger},
journal= {arXiv preprint arXiv:cond-mat/0612612},
year = {2007}
}
Comments
21 pages, 6 figures, accepted for publicaiton at Phys. Rev. B