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Updated: Nov 2, 2025
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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Domain state modulation by interfacial diffusion in FePt/FeCo thin films: experimental approach with micromagnetic
Garima Vashisht1, Zainab Hussain2, Indra Sulania3
1Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India.
Summary
Inter-diffusion between iron-platinum (FePt) and iron-cobalt (FeCo) layers significantly alters structural and magnetic properties. Understanding diffusion kinetics is key to controlling magnetic characteristics in FePt/FeCo systems.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Polycrystalline FePt/FeCo layers are crucial for magnetic applications.
- Interfacial diffusion between these layers impacts structural and magnetic properties.
Purpose of the Study:
- To investigate the complex implications of inter-diffusion between FePt and FeCo layers.
- To understand how FeCo underlayer diffusion affects FePt structural and magnetic properties.
Main Methods:
- Hysteresis measurements
- Magnetic force microscopy (MFM)
- Micromagnetic modeling
Main Results:
- FePt crystalline growth is reduced with increased diffusion.
- Charge redistribution enhances Fe-Pt and Co-Pt interactions.
- Interfacial diffusion leads to distinct out-plane magnetic behavior, forming FeCo@FePt nanocomposites or layered structures with varying anisotropy.
- Micromagnetic modeling shows coercivity reduction with slight diffusion, while complete diffusion requires simulating inhomogeneous anisotropies.
Conclusions:
- Diffusion kinetics critically govern the magnetic properties of FePt/FeCo systems.
- Tailoring diffusion is essential for achieving desired magnetic characteristics.
- This research offers deep insights into FePt/FeCo magnetic behavior for advanced applications.
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