Surface magnetization in non-doped ZnO nanostructures

Details Surface magnetization in non-doped ZnO nanostructures Surface magnetization in non-doped ZnO nanostructures

2009-04-27

arxiv.org/abs/0904.4147v1

Appl. Phys. Lett. 94, 162503 (2009)

Physics

Condensed Matter

Materials Science

8 pages, 3 figures

Scientific paper

10.1063/1.3119640

We have investigated the magnetic properties of non-doped ZnO nanostructures by using {\it ab initio} total energy calculations. Contrary to many proposals that ferromagnetism in non-doped semiconductors should be induced by intrinsic point defects, we show that ferromagnetism in nanostructured materials should be mediated by extended defects such as surfaces and grain boundaries. This kind of defects create delocalized, spin polarized states that should be able to warrant long-range magnetic interactions.

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