The making of ferromagnetic Fe doped ZnO nano-clusters

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.

arXiv comment3 pages, 3 figures

References in corpus (2)

• Prospects of high temperature ferromagnetism in (Ga,Mn)As semiconductors
• Origin of room-temperature ferromagnetism in Mn doped semiconducting CdGeP2

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• Magnetic properties of Mn-doped Ge46 and Ba8Ge46 clathrates