Observation of L1(0)-like chemical ordering in a decahedral FePt nanoparticle by C-s-corrected high resolution transmission electron microscopy

Xuerang Hu; Lin Xie; Jing Zhu; Narayan Poudyal; J. Ping Liu; Jun Yuan

doi:10.1063/1.3068407

Observation of L1(0)-like chemical ordering in a decahedral FePt nanoparticle by C-s-corrected high resolution transmission electron microscopy

Xuerang Hu, Lin Xie, Jing Zhu, Narayan Poudyal, J. Ping Liu, Jun Yuan

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The state of the chemical ordering in a decahedral FePt nanoparticle was studied using aberration corrected high resolution transmission electron microscopy. With the reduced image delocalization effect as a result of spherical aberration correction, it is possible to directly correlate the image intensity with the local state of chemical ordering through the help of a multislice image simulation. We have found direct evidence for the image intensity oscillation from one atomic layer to another. It is interpreted as L1(0)-like chemical ordering, i.e., the alternate occupation of Fe and Pt atoms in the (002) planes. The result suggests that chemical ordering survives even in decahedral nanoparticles down to 3 nm size despite the possible surface effects. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3068407]

Original language	English
Article number	07A723
Number of pages	3
Journal	Journal of Applied Physics
Volume	105
Issue number	7
DOIs	https://doi.org/10.1063/1.3068407
Publication status	Published - 1 Apr 2009

Keywords

MONTE-CARLO
SIZE
PARTICLES
MICROSTRUCTURE
DEPENDENCE
STABILITY
FILMS

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10.1063/1.3068407

2009 Hu JApplPhys105 07A723Submitted manuscript, 188 KB

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title = "Observation of L1(0)-like chemical ordering in a decahedral FePt nanoparticle by C-s-corrected high resolution transmission electron microscopy",

abstract = "The state of the chemical ordering in a decahedral FePt nanoparticle was studied using aberration corrected high resolution transmission electron microscopy. With the reduced image delocalization effect as a result of spherical aberration correction, it is possible to directly correlate the image intensity with the local state of chemical ordering through the help of a multislice image simulation. We have found direct evidence for the image intensity oscillation from one atomic layer to another. It is interpreted as L1(0)-like chemical ordering, i.e., the alternate occupation of Fe and Pt atoms in the (002) planes. The result suggests that chemical ordering survives even in decahedral nanoparticles down to 3 nm size despite the possible surface effects. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3068407]",

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AU - Hu, Xuerang

AU - Xie, Lin

AU - Zhu, Jing

AU - Poudyal, Narayan

AU - Liu, J. Ping

AU - Yuan, Jun

PY - 2009/4/1

Y1 - 2009/4/1

N2 - The state of the chemical ordering in a decahedral FePt nanoparticle was studied using aberration corrected high resolution transmission electron microscopy. With the reduced image delocalization effect as a result of spherical aberration correction, it is possible to directly correlate the image intensity with the local state of chemical ordering through the help of a multislice image simulation. We have found direct evidence for the image intensity oscillation from one atomic layer to another. It is interpreted as L1(0)-like chemical ordering, i.e., the alternate occupation of Fe and Pt atoms in the (002) planes. The result suggests that chemical ordering survives even in decahedral nanoparticles down to 3 nm size despite the possible surface effects. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3068407]

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KW - DEPENDENCE

KW - STABILITY

KW - FILMS

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Observation of L1(0)-like chemical ordering in a decahedral FePt nanoparticle by C-s-corrected high resolution transmission electron microscopy

Abstract

Keywords

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