What is it about?
Electrospun crystalline hematite nanofibers are coated via atomic layer deposition (ALD) with a nickel oxide layer. The formation a continuous polycrystalline NiO layer introduces a surface plasmon at around 510 nm and allows for the detection of a Fe2O3 mode at 1585 cm-1 in the Raman spectra excited by 532 nm laser.
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Why is it important?
ALD allows for a very fine-tuning of the deposited oxide layers. Hence, the reported results pave the way to the controlled synthesis of plasmonic oxide-based nanomaterials, as an alternative to traditional noble metals.
Perspectives
The hybrid nanofibers generated could be engineered for the optical generation and control of spin waves in spintronics.
Saveria Santangelo
Universita degli Studi Mediterranea di Reggio Calabria
Read the Original
This page is a summary of: On the plasmon-assisted detection of a 1585 cm−1 mode in the 532 nm Raman spectra of crystalline α-Fe2O3/polycrystalline NiO core/shell nanofibers, Applied Physics Letters, June 2021, American Institute of Physics,
DOI: 10.1063/5.0050873.
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