Low-Temperature Synthesis of Ordered L10-FePtCu Nanoparticles with High Coercivity

Han Wool Ryu; Kazuhisa Sato; Yoshihiko Hirotsu

doi:10.4028/www.scientific.net/SSP.124-126.855

Paper Titles

Prospects of Potential Semiconductor Spin Detectors
p.839

The Effect of the Geometrical Shape and Size of the Cross Section on the Spin-Polarized Transport and the Giant Magnetoresistance : Finite Element Method Analysis
p.843

First Principle Calculations of the Magnetic Structures of 3d Transition Metals Doped GaN
p.847

Structural and Microwave Properties of Fe-Based Nanopowders via Mechanochemical Synthesis
p.851

Low-Temperature Synthesis of Ordered L1₀-FePtCu Nanoparticles with High Coercivity
p.855

Crystallographic and Magnetic Properties of Sm₂Fe₁₇N₃ Films Grown by RF Magnetron Sputtering
p.859

Glycothermal Synthesis and Magnetic Properties of YIG/YAG Nanoparticles
p.863

Magnetic Patterning of the Ni/Cu Thin Film by 40 keV O Ion Irradiation
p.867

Magnetic Properties and Microstructures of Fe_73.5Si_13.5B₉Cu₁Nb₃ Alloy Crystallized in Nitriding-Atmosphere
p.871

HomeSolid State PhenomenaSolid State Phenomena Vols. 124-126Low-Temperature Synthesis of Ordered L10-FePtCu...

Low-Temperature Synthesis of Ordered L1₀-FePtCu Nanoparticles with High Coercivity

Abstract:

Oriented and densely dispersed L10-FePtCu nanoparticles have been directly synthesized by co-evaporation of Fe, Pt and Cu using rf-magnetron sputtering onto NaCl substrate kept at 563-613K without any post-deposition annealing. Under as low a substrate temperature as 563K, superlattice reflections of the L10 phase appeared in selected area electron diffraction pattern, while the intensity was quite weak. As the substrate temperature increased from 563K to 613K, <100> oriented growth as well as the atomic ordering were promoted, resulted in a large increase of coercivity.