Article ID Journal Published Year Pages File Type
1592726 Solid State Communications 2012 4 Pages PDF
Abstract

The electronic and magnetic properties of N-doped ZnO nanosheets are investigated by density functional theory using local spin density approximation. The results show that in an isolated N-doped ZnO nanosheet, there is a clear spontaneous polarization of N 2p state with a magnetic moment 1.0 μB/N. We also find that the doped nitrogen atoms in ZnO nanosheets have a clustering tendency with ferromagnetic coupling between them, and thus a high room-temperature ferromagnetic nature is expected. The ferromagnetic coupling in N-doped ZnO nanosheets can be attributed to the hole-mediated double-exchange mechanism through strong p–d interaction between nitrogen and zinc atoms.

► In N-doped ZnO NS, there is a spontaneous polarization with magnetic moment 1.0 μB/N. ► The ferromagnetic coupling can be attributed between nitrogen and zinc atoms. ► N atoms in ZnO nanosheets have a clusting tendency with ferromagnetic coupling.

Related Topics
Physical Sciences and Engineering Materials Science Materials Science (General)
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