Magnetic structure of Mn-doped 6H-SiC

M. Al Azri, M. Elzain, K. Bouziane, S. M. Chérif

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Abstract

We investigated the local magnetic properties of Mn-doped 6H-SiC using ab-initio calculations. The calculation addresses various configurations of Mn single impurity and Mn dimers at substitutional/interstitial sites with and without neighboring Si and C vacancies. The calculations showed that a substitutional Mn atom at either Si or C sites possesses a magnetic moment. The Mn atom at Si site possesses larger magnetic moment than Mn atom at C site. Our calculations show that antiferromagnetically coupled pair of Mn atoms at Si sites with neighboring C vacancy is magnetically more stable. The calculation also showed that the interstitial sites with C neighbors are more favorable than those with Si and the magnetic moment for Mn at interstitial sites is less compared to that at substitutional sites. The results are used to understand the experimental data obtained on Mn- 6H-SiC for various Mn concentrations.

Original languageEnglish
Article number012007
JournalJournal of Physics: Conference Series
Volume609
Issue number1
DOIs
Publication statusPublished - May 14 2015

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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