Direct observation of a surface induced disordering process in magnetic nanoparticles

Kovács, András; Sato, Kazuhisa; Lazarov, Vlado K.; Galindo, Pedro L.; Konno, Toyohiko J.; Hirotsu, Yoshihiko

doi:https://doi.org/10.1103/PhysRevLett.103.115703

Direct observation of a surface induced disordering process in magnetic nanoparticles

Kovács, András; Sato, Kazuhisa; Lazarov, Vlado K. et al.

Physical Review Letters, 2009, 103(11), 115703

Number of Access:354（2025-08-14 18:26 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89414

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Title	Direct observation of a surface induced disordering process in magnetic nanoparticles
Creator	CreatorName Kovács, András
	NRID 1000070314424 1000070314424 ORCID 0000-0001-9078-2541 0000-0001-9078-2541 researchmap permalink read0158304 read0158304 Scopus Author ID 55552977400 55552977400 CreatorName Sato, Kazuhisa
	CreatorName Lazarov, Vlado K.
	CreatorName Galindo, Pedro L.
	NRID 1000090260447 1000090260447 CreatorName Konno, Toyohiko J.
	NRID 1000070016525 1000070016525 CreatorName Hirotsu, Yoshihiko
Description	András Kovács, Kazuhisa Sato, Vlado K. Lazarov, Pedro L. Galindo, Toyohiko J. Konno, and Yoshihiko Hirotsu, Phys. Rev. Lett. 103, 115703, 2009.
Abstract	We present experimental evidence of surface induced disordering at magnetic FeCoPd nanoparticles during the L1₀-A1 phase transition using high-resolution aberration-corrected electron microscopy and strain mapping. In situ electron diffraction studies show a narrow temperature range of fully ordered L1₀ structure. The order-disorder transition is size dependent and induces strong lattice deformation in outer part of the nanocrystals. The formation of unusually large strain of 20% is discussed in terms of core-shell structure formation with surface disordered layer and ordered core. © 2009 The American Physical Society.
Publisher	American Physical Society
Source Title	Physical Review Letters
Volume (Issue)	103(11)
Page	115703
Date of Issued	2009-09-11
Language	English
Handle URL	https://hdl.handle.net/11094/89414
PISSN	00319007
eISSN	10797114
NCID	AA00773679
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1103/PhysRevLett.103.115703
Access Rights	open access
CopyRight	Copyright 2009 by the American Physical Society
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Physical Review Letters. 2009, 103(11), p. 115703
DC.title	Direct observation of a surface induced disordering process in magnetic nanoparticles
DC.creator	Kovács, András
	Sato, Kazuhisa
	Lazarov, Vlado K.
	Galindo, Pedro L.
	Konno, Toyohiko J.
	Hirotsu, Yoshihiko
DC.publisher	American Physical Society
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2009-09-11
DC.identifier	https://doi.org/10.1103/PhysRevLett.103.115703
DC.description	András Kovács, Kazuhisa Sato, Vlado K. Lazarov, Pedro L. Galindo, Toyohiko J. Konno, and Yoshihiko Hirotsu, Phys. Rev. Lett. 103, 115703, 2009.
DCTERMS.abstract	We present experimental evidence of surface induced disordering at magnetic FeCoPd nanoparticles during the L1₀-A1 phase transition using high-resolution aberration-corrected electron microscopy and strain mapping. In situ electron diffraction studies show a narrow temperature range of fully ordered L1₀ structure. The order-disorder transition is size dependent and induces strong lattice deformation in outer part of the nanocrystals. The formation of unusually large strain of 20% is discussed in terms of core-shell structure formation with surface disordered layer and ordered core. © 2009 The American Physical Society.
DC.rights	Copyright 2009 by the American Physical Society
DC.format	89414
citation_title	Direct observation of a surface induced disordering process in magnetic nanoparticles
citation_author	Kovács, András
	Sato, Kazuhisa
	Lazarov, Vlado K.
	Galindo, Pedro L.
	Konno, Toyohiko J.
	Hirotsu, Yoshihiko
citation_publisher	American Physical Society
citation_language	English
citation_date	2009-09-11
citation_journal_title	Physical Review Letters
citation_volume	103
citation_issue	11
citation_firstpage	115703
citation_doi	https://doi.org/10.1103/PhysRevLett.103.115703
citation_public_url	https://hdl.handle.net/11094/89414

Direct observation of a surface induced disordering process in magnetic nanoparticles

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