Intermetallic ordering and structure in Fe-Pd alloy nanoparticles

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

doi:https://doi.org/10.1063/1.3122601

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

アクセス数:109件（2025-03-14 16:37 集計）

固定URL: https://hdl.handle.net/11094/89401

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タイトル	Intermetallic ordering and structure in Fe-Pd alloy nanoparticles
著者	NRID 1000070314424 1000070314424 ORCID 0000-0001-9078-2541 0000-0001-9078-2541 researchmap permalink read0158304 read0158304 Scopus Author ID 55552977400 55552977400 著者名 Sato, Kazuhisa
	著者名 Wen, J. G.
	著者名 Zuo, J. M.
内容	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.
抄録	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.
出版者	American Institute of Physics
収録物名	Journal of Applied Physics
巻(号)	105(9)
ページ	093509
刊行年月	2009-05-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/89401
PISSN	00218979
NCID	AA00693547
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1063/1.3122601
アクセス権	open access
権利情報	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.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

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資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Journal of Applied Physics. 2009, 105(9), p. 093509
DC.title	Intermetallic ordering and structure in Fe-Pd alloy nanoparticles
DC.creator	Sato, Kazuhisa
	Wen, J. G.
	Zuo, J. M.
DC.publisher	American Institute of Physics
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2009-05-01
DC.identifier	https://doi.org/10.1063/1.3122601
DC.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.
DCTERMS.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.
DC.rights	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.
DC.format	89401
citation_title	Intermetallic ordering and structure in Fe-Pd alloy nanoparticles
citation_author	Sato, Kazuhisa
	Wen, J. G.
	Zuo, J. M.
citation_publisher	American Institute of Physics
citation_language	英語
citation_date	2009-05-01
citation_journal_title	Journal of Applied Physics
citation_volume	105
citation_issue	9
citation_firstpage	093509
citation_doi	https://doi.org/10.1063/1.3122601
citation_public_url	https://hdl.handle.net/11094/89401