journal article

Journal Article

Text

Journal of Applied Physics. 2006, 100(7), p. 074914

Perpendicular magnetic anisotropy of epitaxially grown L1₀-FePdCu nanoparticles with preferential c -axis orientation

American Institute of Physics

English

Text

2006-10-01

https://doi.org/10.1063/1.2357420

Hiroshi Naganuma, Kazuhisa Sato, and Yoshihiko Hirotsu, "Perpendicular magnetic anisotropy of epitaxially grown L1₀-FePdCu nanoparticles with preferential c-axis orientation", Journal of Applied Physics 100, 074914 (2006) https://doi.org/10.1063/1.2357420.

Oriented and well-isolated 14-nm -sized Fe₄₁ Pd₅₂ Cu₇ ternary alloy nanoparticles with the L 1₀ -type ordered structure have been fabricated by the sequential deposition of Pd, Cu, and Fe on NaCl (001) substrate followed by postdeposition annealing. The annealing temperature required to obtain a high coercivity decreased by at least 50 K upon the addition of a small amount of Cu. Furthermore, it was revealed that a strong preferential c -axis orientation along the film normal direction was achieved by the addition of Cu, which resulted in a strong perpendicular magnetic anisotropy. The population of the nanoparticles with their c -axis oriented normal to the film plane was 74%. The alloy composition was independent of the particle size, as determined by energy dispersive x-ray spectroscopy using nanoprobe electrons. Nanobeam electron diffraction revealed that the axial ratio is constant for FePdCu nanoparticles with sizes between 10 and 25 nm. Interparticle magnetostatic and exchange interactions played an insignificant role in the isolated FePdCu nanoparticles. The correlation between their preferential c -axis orientation and magnetic properties is discussed based on the rotation magnetization of single magnetic domain particles. © 2006 American Institute of Physics.

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Hiroshi Naganuma, Kazuhisa Sato, and Yoshihiko Hirotsu, "Perpendicular magnetic anisotropy of epitaxially grown L1₀-FePdCu nanoparticles with preferential c-axis orientation", Journal of Applied Physics 100, 074914 (2006) and may be found at https://doi.org/10.1063/1.2357420.

89398

Perpendicular magnetic anisotropy of epitaxially grown L1₀-FePdCu nanoparticles with preferential c -axis orientation

American Institute of Physics

English

2006-10-01

Journal of Applied Physics

100

7

074914

https://doi.org/10.1063/1.2357420

https://hdl.handle.net/11094/89398