First-principles study on electronic and magnetic properties of (Mn,Fe)-codoped ZnO
Artikel i vetenskaplig tidskrift, 2014
First-principle calculations have been performed to investigate the electronic and magnetic properties of (Mn,Fe)-codoped ZnO within the generalized gradient approximation (GGA) and GGA+U schemes. The formation energy of five different configurations is investigated and the ground state is demonstrated to be ferromagnetic ordering. By applying the U correction, the band gap energy of pure ZnO is close to the experimental values, while the ferromagnetic ordering of the ground state remains unchanged. The ferromagnetic stabilization is mediated by double exchange mechanism. In addition, defects corresponding to Zn-vacancy and O-vacancy cannot enhance the ferromagnetism obviously. These results indicate that (Mn,Fe)-codoped ZnO are promising magneto-electronic and spintronic materials. (C) 2013 Elsevier B.V. All rights reserved
ROOM-TEMPERATURE FERROMAGNETISM
Electronic structure
Spintronic
GGA
PLUS U
Magnetic property
ZnO
GENERALIZED GRADIENT APPROXIMATION
Bulk
SEMICONDUCTOR SPINTRONICS
DOPED ZNO
1ST PRINCIPLES
Författare
H. W. Cao
P. F. Lu
N. N. Cai
X. L. Zhang
Z. Y. Yu
T. Gao
Shu Min Wang
Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik
Journal of Magnetism and Magnetic Materials
0304-8853 (ISSN)
Vol. 352 66-71Ämneskategorier (SSIF 2011)
Materialteknik
Den kondenserade materiens fysik
DOI
10.1010/j.jmmm.2013.10.008