Structural and magnetic properties of Mn-implanted Si

Details Structural and magnetic properties of Mn-implanted Si Structural and magnetic properties of Mn-implanted Si

2006-12-24

arxiv.org/abs/cond-mat/0612612v1

Phys. Rev. B 75, 085203 (2007) (6 pages)

Physics

Condensed Matter

Materials Science

21 pages, 6 figures, accepted for publicaiton at Phys. Rev. B

Scientific paper

10.1103/PhysRevB.75.085203

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.

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