Surface magnetization in non-doped ZnO nanostructures

Schoenhalz, A. L.; Arantes, J. T.; Fazzio, A.; Dalpian, G. M.
April 2009
Applied Physics Letters;4/20/2009, Vol. 94 Issue 16, p162503
Academic Journal
We have investigated the magnetic properties of non-doped ZnO nanostructures by using 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 creates delocalized, spin-polarized states that should be able to warrant long-range magnetic interactions.


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