Magnetic NiFe thin films composing MoS₂ nanostructures for spintronic application

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Permalloy (Py) is a widely used ferromagnetic material.
• Molybdenum disulfide (MoS₂) is a 2D material with unique electronic and optical properties.
• Conjugating magnetic materials with 2D materials is an emerging area for novel device applications.

Purpose of the Study:

• To develop a single-step co-deposition method for creating Py/MoS₂ nanostructure layers.
• To investigate the magnetic and magneto-optical properties of Py/MoS₂ thin films.
• To explore the potential of this synthesis method for spintronic devices.

Main Methods:

• Single-step co-deposition of Py and MoS₂ from a single solution.
• Characterization using vibrating sample magnetometry (VSM) to measure coercivity.
• Magneto-optical Kerr effect (MOKE) measurements.
• Ferromagnetic resonance (FMR) spectroscopy to analyze linewidth and damping.
• Raman spectroscopy and elemental mapping to confirm MoS₂ quality and distribution.

Main Results:

• Successful synthesis of Py thin films conjugated with MoS₂ nano-flakes.
• Observed increase in coercivity and enhancement of the magneto-optical Kerr effect in Py/MoS₂ films compared to pure Py.
• Significant increase in ferromagnetic resonance linewidth and damping parameter due to MoS₂ presence.
• Confirmation of MoS₂ quality and integration within the Py matrix via Raman and elemental mapping.

Conclusions:

• The co-deposition method provides an effective route for fabricating Py/MoS₂ nanostructures.
• The incorporation of MoS₂ significantly modifies the magnetic properties of Py films.
• This approach offers a promising pathway for the electrochemical production of advanced spintronic devices.