Enhancement of ferromagnetism in Mn-doped Si via B codoping

Yaping Zhang, Liqing Pan, Hao Zhu, Weigang Wang, Lubna R. Shah, Xin Fan, John Q. Xiao

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Room temperature ferromagnetic Mn0.026 BX Si0.974-X bulk samples with X=0.001, 0.005, and 0.01 were fabricated by arc melting and followed by thermal annealing at 1000 °C. The effects of carrier density on the ferromagnetism were studied. Due to the high carrier densities, all samples showed metallic behavior. Kondo effect was observed when the temperature was below 10 K. Weakly localized carriers monotonously increased with increasing boron concentration, resulting in the enhancement of exchange coupling among Mn ions. The study indicated that the ferromagnetism originates from the hole mediated Ruderman-Kittel-Kasuya-Yosida mechanism.

Original languageEnglish (US)
Article number09C305
JournalJournal of Applied Physics
Issue number9
StatePublished - May 1 2010

ASJC Scopus subject areas

  • General Physics and Astronomy


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