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arXiv · 0905.1176

The making of ferromagnetic Fe doped ZnO nano-clusters

Nirmal Ganguli·Indra Dasgupta·Biplab Sanyal
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Abstract

In this letter, the authors present a study of the energetics and magnetic interactions in Fe doped ZnO clusters by ab-initio density functional calculations. The results indicate that defects under suitable conditions can induce ferromagnetic interactions between the dopant Fe atoms whereas antiferromagnetic coupling dominates in a neutral defect-free cluster. The calculations also reveal an unusual ionic state of the dopant Fe atom residing at the surface of the cluster, a feature that is important to render the cluster ferromagnetic.

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Nirmal Ganguli, Indra Dasgupta, Biplab Sanyal. 2009-05-08. The making of ferromagnetic Fe doped ZnO nano-clusters. https://doi.org/10.1063/1.3136904

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