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Abstract We have studied the magnetic properties and electronic structure of 2 nm Fe3O4 film on GaAs substrates, which evolve in a nano-tip structure and compared it with 150 nm thick Fe3O4… Click to show full abstract
Abstract We have studied the magnetic properties and electronic structure of 2 nm Fe3O4 film on GaAs substrates, which evolve in a nano-tip structure and compared it with 150 nm thick Fe3O4 film. Valence band studies reveal a drop in density of states at Fermi level for 2 nm film as compared to thicker film. XMCD studies divulge the unusual high magnetization value of ∼5.1 μB/FU in 2 nm film compared to 3.9 μB/FU observed for bulk Fe3O4 or thicker Fe3O4 films. The excess moment is shown to be due to orbital moment contribution.
Journal Title: Journal of Magnetism and Magnetic Materials
Year Published: 2019
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