A Study of Ta 2 O 5 Nanopillars with Ni Tips Prepared by Porous Anodic Alumina Through-Mask Anodization

The paper discusses the formation of Ta O pillars with Ni tips during thin porous anodic alumina through-mask anodization on Si/SiO substrates. The tantalum nanopillars were formed through porous masks in electrolytes of phosphoric and oxalic acid. The Ni tips on the Ta O pillars were formed via vac...

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Veröffentlicht in:Nanomaterials (Basel, Switzerland) Switzerland), 2022-04, Vol.12 (8)
Hauptverfasser: Vorobjova, Alla I, Tishkevich, Daria I, Outkina, Elena A, Shimanovich, Dmitry L, Razanau, Ihar U, Zubar, Tatiana I, Bondaruk, Anastasia A, Zheleznova, Ekaterina K, Dong, Mengge, Aloraini, Dalal A, Sayyed, M I, Almuqrin, Aljawhara H, Silibin, Maxim V, Trukhanov, Sergey V, Trukhanov, Alex V
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Sprache:eng
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Zusammenfassung:The paper discusses the formation of Ta O pillars with Ni tips during thin porous anodic alumina through-mask anodization on Si/SiO substrates. The tantalum nanopillars were formed through porous masks in electrolytes of phosphoric and oxalic acid. The Ni tips on the Ta O pillars were formed via vacuum evaporation through the porous mask. The morphology, structure, and magnetic properties at 4.2 and 300 K of the Ta O nanopillars with Ni tips have been studied using scanning electron microscopy, X-ray diffraction, and vibrating sample magnetometry. The main mechanism of the formation of the Ta O pillars during through-mask anodization was revealed. The superparamagnetic behavior of the magnetic hysteresis loop of the Ta O nanopillars with Ni tips was observed. Such nanostructures can be used to develop novel functional nanomaterials for magnetic, electronic, biomedical, and optical nano-scale devices.
ISSN:2079-4991
2079-4991