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Condensed Matter > Materials Science

Title: An experimental and Ab-initio study of Electronic and Magnetic properties of FeGa3

Abstract: Electronic structure of FeGa3 has been studied using experiments and ab-initio calculations. Magnetization measurements show that FeGa3 is inherently diamagnetic in nature. Our studies indicate that the previously reported magnetic moment on the Fe atoms in FeGa3 is not an intrinsic property of FeGa3, but is primarily due to the presence of disorder, defects, grain boundaries etc that break the symmetry about the Fe dimers. Analysis of the results obtained from magnetic measurements, photoelectron spectroscopy, Fe K-edge X-ray absorption near edge spectroscopy and ab-initio calculations clearly indicates that, the effects of on-site Coulomb repulsion between the Fe 3d electrons do not play any role in determining the electronic and magnetic properties of FeGa3. Detailed analysis of results of single crystal and poycrystalline FeGa3, helps to resolve the discrepancy in the electronic and magnetic properties in FeGa3 existing in the literature, consistently.
Comments: 9 figures, 1 table
Subjects: Materials Science (cond-mat.mtrl-sci)
Cite as: arXiv:1803.06605 [cond-mat.mtrl-sci]
  (or arXiv:1803.06605v1 [cond-mat.mtrl-sci] for this version)

Submission history

From: Debashis Mondal [view email]
[v1] Sun, 18 Mar 2018 05:25:01 GMT (174kb)