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Ordered FePdCu nanoisland arrays made by templated solid-state dewetting
M Krupinski1, M Perzanowski, A Zarzycki
1Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland.
Nanotechnology
|October 1, 2015
Summary
Ordered FePdCu nanoisland arrays were fabricated using templated dewetting. This method yields well-controlled nanoislands with enhanced magnetic properties due to a partially ordered L10 alloy, demonstrating potential for advanced materials.
Area of Science:
- Materials Science
- Nanotechnology
- Condensed Matter Physics
Background:
- Thin film dewetting is a common method for creating nanostructures.
- Self-assembled nanospheres offer a template for patterned dewetting.
- Controlling alloy ordering is crucial for magnetic property tuning.
Purpose of the Study:
- To investigate the formation of ordered FePdCu nanoisland arrays.
- To explore the structural and magnetic properties of these nanoislands.
- To assess the role of templated dewetting and copper admixture.
Main Methods:
- Fabrication of [Cu/Fe/Pd] multilayers on SiO2 nanospheres.
- Annealing at 600 °C to induce solid-state dewetting.
- Characterization using X-ray Diffraction (XRD) and SQUID magnetometry.
Main Results:
- Formation of single FePdCu nanoislands on each SiO2 nanosphere.
- Observation of a partially ordered L10 alloy phase after annealing.
- Significant magnetic hardening of the nanoisland material.
Conclusions:
- Templated dewetting provides precise control over nanoisland size and position.
- Copper admixture influences the structural and magnetic properties of FePdCu nanoislands.
- The L10 alloy formation is key to the observed magnetic hardening.
