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Electrospun, Oriented, Ferromagnetic Ni Fe Nanofibers.

Vaibhav S Bhugra1, Grant V M Williams1, Shen V Chong2

  • 1School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand.

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|March 3, 2020
PubMed
Summary
This summary is machine-generated.

Researchers fabricated ferromagnetic nickel-iron (Ni0.47Fe0.53) nanofibers using electrospinning. These nanostructured mats exhibit enhanced magnetic properties, including higher coercivity compared to bulk materials.

Keywords:
electrospinningferromagneticmagnetic propertiesnanofibersnanomaterialspolyvinylpyrrolidone (PVP)

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Magnetism

Background:

  • Electrospinning is a versatile technique for fabricating continuous nanofibers.
  • Nanostructured ferromagnetic materials offer unique magnetic properties.
  • Nickel-iron (Ni-Fe) alloys are of interest for magnetic applications.

Purpose of the Study:

  • To fabricate ferromagnetic Ni0.47Fe0.53 nanofiber mats using electrospinning.
  • To characterize the structural and magnetic properties of the synthesized nanofibers.
  • To investigate the potential for enhanced magnetic performance in nanostructured Ni-Fe.

Main Methods:

  • Electrospinning of a polyvinylpyrrolidone template with nickel and iron precursors.
  • Annealing in argon (Ar) and a mixture of Ar and hydrogen (H2) at elevated temperatures (300°C and 600°C).
  • Characterization of nanofiber structure, nanocrystal size, and magnetic properties (saturation magnetization, coercivity).

Main Results:

  • Successfully fabricated individual, oriented Ni0.47Fe0.53 nanofibers via electrospinning.
  • Nanofibers contained Ni0.47Fe0.53 nanocrystals (~14 nm average diameter).
  • High saturation magnetic moment comparable to other nanostructured Ni-Fe, with enhanced coercivity over bulk material.

Conclusions:

  • Electrospinning provides a viable route to produce nanostructured ferromagnetic Ni0.47Fe0.53 nanofibers.
  • The nanostructure contributes to enhanced magnetic properties, including coercivity.
  • Potential for tailored magnetic performance in nanoscale Ni-Fe materials.