Synthesis and structure of isolated L10FePt particles

Bo Bian; David E. Laughlin; Kazuhisa Sato; Yoshihiko Hirotsu

doi:10.1109/20.908663

Synthesis and structure of isolated L1₀FePt particles

Bo Bian, David E. Laughlin, Kazuhisa Sato, Yoshihiko Hirotsu

Research output: Contribution to journal › Conference article › peer-review

13 Citations (Scopus)

Abstract

Isolated FePt particles were fabricated by taking advantage of overgrowth of Fe on Pt particles and subsequent annealing at 873K. The annealing lead to the formation of ordered tetragonal (L1₀) FePt particles with three orthogonal variants. The average size of FePt particles could be adjusted to less than 10 nm and no significant grain coarsening occurred upon annealing due to the existence of an amorphous Al₂O₃ layer. Nano-beam electron diffraction revealed that the lattice constant ratio c/a was approximately 0.97 for the annealed FePt particles with Fe composition close to 50 at.%.

Original language	English
Pages (from-to)	3021-3023
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	36
Issue number	5 I
DOIs	https://doi.org/10.1109/20.908663
Publication status	Published - 2000 Sept
Externally published	Yes
Event	2000 International Magnetics Conference (INTERMAG 2000) - Toronto, Ont, Canada Duration: 2000 Apr 9 → 2000 Apr 12

Keywords

FePt
Isolated particles
L1phase
Ordering
TEM

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/20.908663

Cite this

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title = "Synthesis and structure of isolated L10FePt particles",

abstract = "Isolated FePt particles were fabricated by taking advantage of overgrowth of Fe on Pt particles and subsequent annealing at 873K. The annealing lead to the formation of ordered tetragonal (L10) FePt particles with three orthogonal variants. The average size of FePt particles could be adjusted to less than 10 nm and no significant grain coarsening occurred upon annealing due to the existence of an amorphous Al2O3 layer. Nano-beam electron diffraction revealed that the lattice constant ratio c/a was approximately 0.97 for the annealed FePt particles with Fe composition close to 50 at.%.",

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author = "Bo Bian and Laughlin, {David E.} and Kazuhisa Sato and Yoshihiko Hirotsu",

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T1 - Synthesis and structure of isolated L10FePt particles

AU - Bian, Bo

AU - Laughlin, David E.

AU - Sato, Kazuhisa

AU - Hirotsu, Yoshihiko

PY - 2000/9

Y1 - 2000/9

N2 - Isolated FePt particles were fabricated by taking advantage of overgrowth of Fe on Pt particles and subsequent annealing at 873K. The annealing lead to the formation of ordered tetragonal (L10) FePt particles with three orthogonal variants. The average size of FePt particles could be adjusted to less than 10 nm and no significant grain coarsening occurred upon annealing due to the existence of an amorphous Al2O3 layer. Nano-beam electron diffraction revealed that the lattice constant ratio c/a was approximately 0.97 for the annealed FePt particles with Fe composition close to 50 at.%.

AB - Isolated FePt particles were fabricated by taking advantage of overgrowth of Fe on Pt particles and subsequent annealing at 873K. The annealing lead to the formation of ordered tetragonal (L10) FePt particles with three orthogonal variants. The average size of FePt particles could be adjusted to less than 10 nm and no significant grain coarsening occurred upon annealing due to the existence of an amorphous Al2O3 layer. Nano-beam electron diffraction revealed that the lattice constant ratio c/a was approximately 0.97 for the annealed FePt particles with Fe composition close to 50 at.%.

KW - FePt

KW - Isolated particles

KW - L1phase

KW - Ordering

KW - TEM

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