Original Publication Date
The Journal of Chemical Physics
DOI of Original Publication
Date of Submission
Using density functional theory with generalized gradient approximation for exchange and correlation, we show that otherwise antiferromagnetically coupled chromium atoms in very small chromium clusters couple ferromagnetically when doped with a nitrogen atom, thus leading to giant magnetic moments. For example, the magnetic moment of Cr2N is found to be 9μBwhile that of Cr2 is 0μB. Strong bonding between Cr and N atoms brings about this magnetic transition. The Cr atoms nearest neighbor to N couple ferromagnetically with each other and antiferromagnetically with nitrogen. The significance of these results in understanding the ferromagnetic order in Cr-doped GaN is discussed.
Wang, Q., Sun, Q., Rao, B. K., et al. Nitrogen-induced magnetic transition in small chromium clusters. The Journal of Chemical Physics 119, 7124 (2003). Copyright © 2003 AIP Publishing LLC.
Is Part Of
VCU Physics Publications