Intermetallic ordering and structure in Fe-Pd alloy nanoparticles

Sato, Kazuhisa; Wen, J. G.; Zuo, J. M.

Journal of Applied Physics, 2009, 105(9), 093509

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Identifier to cite or link to this item: https://hdl.handle.net/11094/89401

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Title
Intermetallic ordering and structure in Fe-Pd alloy nanoparticles
Creator
NRID
1000070314424 1000070314424
ORCID
0000-0001-9078-2541 0000-0001-9078-2541
researchmap permalink
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Scopus Author ID
55552977400 55552977400
CreatorName
Sato, Kazuhisa
CreatorName
Wen, J. G.
CreatorName
Zuo, J. M.
Description
Kazuhisa Sato, J. G. Wen, and J. M. Zuo, "Intermetallic ordering and structure in Fe–Pd alloy nanoparticles", Journal of Applied Physics 105, 093509 (2009) https://doi.org/10.1063/1.3122601.
Abstract
We report an in situ study of epitaxial island formation and alloying of FePd nanoparticles using reflection high-energy electron diffraction (RHEED) followed by ex situ atomic structure characterization. We used aberration corrected (AC) scanning transmission electron microscopy (STEM) with a high-angle annular dark field (HAADF) detector for the study of chemical ordering. The FePd nanoparticles were formed by sequential deposition of Pd and Fe onto NaCl substrates, which was then followed by heating to high temperatures to promote chemical ordering during a short period of annealing. We show that the epitaxial island growth and subsequent alloying of Fe into Pd can be clearly detected by RHEED. The high resolution and the atomic number (Z) contrast of AC HAADF-STEM allow a clear observation of nanometer-sized local chemical order in very small nanoparticles. The results revealed complex chemical structures at an intermediate stage of the ordering process with ordered regions of both L1₀ and L1₂ phases. © 2009 American Institute of Physics.
Publisher
American Institute of Physics
Source Title
Journal of Applied Physics
Volume (Issue)
105(9)
Page
093509
Date of Issued
2009-05-01
Language
English
Handle URL
https://hdl.handle.net/11094/89401
PISSN
00218979
NCID
AA00693547
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1063/1.3122601
Access Rights
open access
CopyRight
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 Kazuhisa Sato, J. G. Wen, and J. M. Zuo, "Intermetallic ordering and structure in Fe–Pd alloy nanoparticles", Journal of Applied Physics 105, 093509 (2009) and may be found at https://doi.org/10.1063/1.3122601.
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学術雑誌論文 Journal Article