Open AccessThe magnetism study of N-doped diamond
Author(s) -
Xueling Lin,
Fengchun Pan
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.166102
Subject(s) - magnetism , diamond , ferromagnetism , condensed matter physics , materials science , curie temperature , vacancy defect , impurity , doping , magnetic semiconductor , coupling (piping) , physics , metallurgy , quantum mechanics
We perform the first-principles calculations to investigate the roles of C vacancy and nitrogen impurity in the magnetic properties of diamond. The coupling is ferromagnetic between the C vacancies in -2e charged state, whereas they prefer to interact antiferromagnetically in -e charged state. Substituting C with N atoms can manipulate the charge states of C vacancies and the magnetic interactions between them. Our work offers a possible route toward high Curie temperature ferromagnetism in metal-free diamond.