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) |
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Hauptverfasser: | , , , , , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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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. |
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ISSN: | 2079-4991 2079-4991 |