The L1₀ ordered MPt(0 0 1) thin films (M = Fe or Co) are very interesting for perpendicular recording due to their magnetic anisotropy and magneto-optical behaviors. Nevertheless, in this type of recording, the problem remains, since the strong magnetic anisotropy involves a high coercive field, difficult to overcome with a miniaturized writing head. (Fe-Ni)₅₀Pt₅₀ thin films consist in a good compromise to decrease the coercivity and the Curie temperature keeping large enough remanent magnetization and magnetic anisotropy.

Epitaxial L1₀-ordered NiPt(0 0 1) / FePt(0 0 1) bi-layers were co-deposited on MgO(1 0 0) substrates by MBE. The L1₀ order parameter is high with the concentration modulation along the growth direction. Some FeNiPt₂(0 0 1) thin films were obtained by interdiffusion of the bi-layers. The L1₀ order parameter is conserved after interdiffusion, which can be explained by different mechanisms:

- a second neighbor jump,

- a six jump cycle mechanism,

- a double vacancy diffusion,

- a triple defect mechanism.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/7697 must be provided.

1. Simulation of atomic migration in CoPt ordered alloys
2. Quenched molecular dynamics simulations of the vacancy behaviour near the (001) surface of an ordered CoPt alloy
3. Surface effect on atomic ordering in nano-layered L1₀ AB binaries: multiscale Monte Carlo Simulation
4. Formation of stacking defects at surfaces: From atomistic modelling to DFT calculations.
5. Comparison of patterning of highly ordered CoPt alloys with perpendicular anisotropy using two methods: ion etching and ion irradiation
6. ATOMIC MIGRATION ON ORDERING IN BULK AND NANOSTRUCTURED FePt L10-ORDERED INTERMETALLIC COMPOUND SHOWING HIGH MAGNETIC ANISOTROPY.
7. ATOMISTIC MODELLING OF SUPERSTRUCTURE REFINEMENT IN CRYSTALLINE MATERIALS