Magnetic interaction in superparamagnetic Co-Pt nanoparticles synthesized in protein crystal

Tagata, Kakeru; Kanda, Daisuke; Kobayashi, Naoto; Higashiura, Akifumi; Ichikawa, Satoshi; Kishida, Noriaki; Nakatani, Ryoichi; Nakagawa, Atsushi; Shiratsuchi, Yu

doi:https://doi.org/10.1109/TMAG.2023.3290367

Magnetic interaction in superparamagnetic Co-Pt nanoparticles synthesized in protein crystal

Tagata, Kakeru; Kanda, Daisuke; Kobayashi, Naoto et al.

IEEE Transactions on Magnetics, 2023, 59(11)

Number of Access:997（2025-11-20 12:58 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/92843

Link to primary information

File	Format	Terms of use	Size	Views	Date.Available	Description	information
IEEETransMagn	pdf	None	882 KB	119	2023.10.27

Item Information

Output File Export EndNote Basic Export Mendeley

Title	Magnetic interaction in superparamagnetic Co-Pt nanoparticles synthesized in protein crystal
Creator	CreatorName Tagata, Kakeru
	CreatorName Kanda, Daisuke
	CreatorName Kobayashi, Naoto
	NRID 1000090598129 1000090598129 CreatorName Higashiura, Akifumi
	NRID 1000080403137 1000080403137 ORCID 0000-0003-3597-1045 0000-0003-3597-1045 researchmap permalink satoshiichikawa satoshiichikawa Scopus Author ID 36055779800 36055779800 CreatorName Ichikawa, Satoshi
	CreatorName Kishida, Noriaki
	CreatorName Nakatani, Ryoichi
	NRID 1000060314374 1000060314374 researchmap permalink read0068619 read0068619 Scopus Author ID 7005234924 7005234924 CreatorName Nakagawa, Atsushi
	NRID 1000070379121 1000070379121 ORCID 0000-0002-8938-4869 0000-0002-8938-4869 researchmap permalink read0090304 read0090304 Scopus Author ID 6602197167 6602197167 CreatorName Shiratsuchi, Yu
Subject	Crystals
	dipolar interaction
	Ions
	Magnetic field measurement
	magnetic nanoparticle
	Magnetization
	Nanoparticles
	protein crystal
	Proteins
	superparamagnetism
	Temperature measurement
Description	Tagata K., Kanda D., Kobayashi N., et al. Magnetic interaction in superparamagnetic Co-Pt nanoparticles synthesized in protein crystal. IEEE Transactions on Magnetics , (2023); https://doi.org/10.1109/TMAG.2023.3290367.
Abstract	We synthesized Co-Pt nanoparticles in a crystal composed of proteins with a cage structure (i.e., <italic>Pyrococcus furiosus</italic> virus-like particle (PfV)) and investigated their magnetic interactions. When the soaking concentrations of metal, Co, and Pt ions in the PfV crystal were below 5.5 mM, isolated Co-Pt nanoparticles were formed. The size of the primary particles was 2-3 nm, which was smaller than the inner core size of the cage structure. When the soaking concentrations increased above 11 mM, the Co-Pt nanoparticles formed aggregates exceeding 30 nm in size. The synthesized nanoparticles showed superparamagnetic behavior at 300 K, independent of the soaking concentration. The temperature dependence of the AC magnetic susceptibility and remanent magnetization curve verified the occurrence of magnetic interactions between the Co-Pt nanoparticles. These measurements revealed that the dipolar-dipolar interaction was significant in the closely packed isolated nanoparticles, whereas it was weaker in the aggregated Co-Pt nanoparticles, probably due to the increased distance between the particles.
Publisher	Institute of Electrical and Electronics Engineers Inc.
Source Title	IEEE Transactions on Magnetics
Volume (Issue)	59(11)
Date of Issued	2023-11-01
Language	English
Handle URL	https://hdl.handle.net/11094/92843
PISSN	00189464
eISSN	19410069
Relation.isVersionOf	DOI (Publisher Version) https://doi.org/10.1109/TMAG.2023.3290367
Access Rights	open access
CopyRight	© 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
oaire:version	Accepted Manuscript
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	IEEE Transactions on Magnetics. 2023, 59(11)
DC.title	Magnetic interaction in superparamagnetic Co-Pt nanoparticles synthesized in protein crystal
DC.creator	Tagata, Kakeru
	Kanda, Daisuke
	Kobayashi, Naoto
	Higashiura, Akifumi
	Ichikawa, Satoshi
	Kishida, Noriaki
	Nakatani, Ryoichi
	Nakagawa, Atsushi
	Shiratsuchi, Yu
DC.publisher	Institute of Electrical and Electronics Engineers Inc.
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2023-11-01
DC.identifier	https://doi.org/10.1109/TMAG.2023.3290367
DC.subject	Crystals
	dipolar interaction
	Ions
	Magnetic field measurement
	magnetic nanoparticle
	Magnetization
	Nanoparticles
	protein crystal
	Proteins
	superparamagnetism
	Temperature measurement
DC.description	Tagata K., Kanda D., Kobayashi N., et al. Magnetic interaction in superparamagnetic Co-Pt nanoparticles synthesized in protein crystal. IEEE Transactions on Magnetics , (2023); https://doi.org/10.1109/TMAG.2023.3290367.
DCTERMS.abstract	We synthesized Co-Pt nanoparticles in a crystal composed of proteins with a cage structure (i.e., <italic>Pyrococcus furiosus</italic> virus-like particle (PfV)) and investigated their magnetic interactions. When the soaking concentrations of metal, Co, and Pt ions in the PfV crystal were below 5.5 mM, isolated Co-Pt nanoparticles were formed. The size of the primary particles was 2-3 nm, which was smaller than the inner core size of the cage structure. When the soaking concentrations increased above 11 mM, the Co-Pt nanoparticles formed aggregates exceeding 30 nm in size. The synthesized nanoparticles showed superparamagnetic behavior at 300 K, independent of the soaking concentration. The temperature dependence of the AC magnetic susceptibility and remanent magnetization curve verified the occurrence of magnetic interactions between the Co-Pt nanoparticles. These measurements revealed that the dipolar-dipolar interaction was significant in the closely packed isolated nanoparticles, whereas it was weaker in the aggregated Co-Pt nanoparticles, probably due to the increased distance between the particles.
DC.rights	© 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
DC.format	92843
citation_title	Magnetic interaction in superparamagnetic Co-Pt nanoparticles synthesized in protein crystal
citation_author	Tagata, Kakeru
	Kanda, Daisuke
	Kobayashi, Naoto
	Higashiura, Akifumi
	Ichikawa, Satoshi
	Kishida, Noriaki
	Nakatani, Ryoichi
	Nakagawa, Atsushi
	Shiratsuchi, Yu
citation_publisher	Institute of Electrical and Electronics Engineers Inc.
citation_language	English
citation_date	2023-11-01
citation_journal_title	IEEE Transactions on Magnetics
citation_volume	59
citation_issue	11
citation_doi	https://doi.org/10.1109/TMAG.2023.3290367
citation_public_url	https://hdl.handle.net/11094/92843

Magnetic interaction in superparamagnetic Co-Pt nanoparticles synthesized in protein crystal

Link to primary information

Item Information

Show details