CoCrPt/Ti perpendicular media onto nanostructured polymer templates.

Area of Science:

• Materials Science
• Nanotechnology
• Magnetism

Background:

• Ordered polymer templates offer a route to fabricating complex nanostructures.
• Controlling magnetic properties at the nanoscale is crucial for advanced data storage and spintronic devices.

Purpose of the Study:

• To investigate the magnetic properties of cobalt-chromium-platinum/titanium (CoCrPt/Ti) nanostructures fabricated on ordered polymer templates.
• To understand how template structure and film thickness affect magnetic anisotropy and domain behavior.

Main Methods:

• Fabrication of CoCrPt/Ti nanostructures using sputtering deposition onto ordered polymer templates.
• Characterization of magnetic properties, including out-of-plane magnetization.
• Magnetic Force Microscopy (MFM) to analyze magnetic domain structure.

Main Results:

• CoCrPt/Ti nanostructures exhibit a significant out-of-plane magnetization component, exceeding that of planar films.
• Out-of-plane magnetization strength increases with CoCrPt film thickness and decreases with shorter ordering periods in the nanostructure.
• Polymer template shape critically influences the magnetic easy-axis orientation.
• MFM revealed single magnetic domain structures with high out-of-plane anisotropy in samples with longer ordering periods (480 nm).

Conclusions:

• Ordered polymer templates enable the fabrication of CoCrPt/Ti nanostructures with enhanced out-of-plane magnetic anisotropy.
• Nanostructure periodicity and film thickness are key parameters for tuning magnetic properties.
• These findings are relevant for developing novel magnetic storage media and spintronic applications.