Fabrication of exchange-coupled α-Fe/L10-FePd nanocomposite isolated particles

Juruchi Kawamura; Kazuhisa Sato; Yoshihiko Hirotsu

doi:10.1063/1.1782963

Fabrication of exchange-coupled α-Fe/L1₀-FePd nanocomposite isolated particles

Juruchi Kawamura, Kazuhisa Sato, Yoshihiko Hirotsu

University Research Administration (URA) Center

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

11 Citations (Scopus)

Abstract

The fabrication of exchange-coupled α-Fe/L1₀-FePd nanocomposite particles, by annealing the Fe/Pd nanocomplex particles, was analyzed. It was observed that two regions composed of α-Fe and L1 ₀-FePd coexisted in each nanoparticle separated by a diffusion boundary. It was also observed that there was a gradual increase in the saturation magnetization with increase in the volume ratio of the α-Fe region. The results show that an exchange coupling existed between α-Fe and L1₀-FePd crystallites connected coherently with each other within the nanoparticles.

Original language	English
Pages (from-to)	3906-3911
Number of pages	6
Journal	Journal of Applied Physics
Volume	96
Issue number	7
DOIs	https://doi.org/10.1063/1.1782963
Publication status	Published - 2004 Oct 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.1782963

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title = "Fabrication of exchange-coupled α-Fe/L10-FePd nanocomposite isolated particles",

abstract = "The fabrication of exchange-coupled α-Fe/L10-FePd nanocomposite particles, by annealing the Fe/Pd nanocomplex particles, was analyzed. It was observed that two regions composed of α-Fe and L1 0-FePd coexisted in each nanoparticle separated by a diffusion boundary. It was also observed that there was a gradual increase in the saturation magnetization with increase in the volume ratio of the α-Fe region. The results show that an exchange coupling existed between α-Fe and L10-FePd crystallites connected coherently with each other within the nanoparticles.",

author = "Juruchi Kawamura and Kazuhisa Sato and Yoshihiko Hirotsu",

note = "Funding Information: The authors wish to thank Professor T. Kawai and Dr. H. Tanaka of ISIR, Osaka University, for their help with the SQUID measurement. This study was supported by the Center of Excellence (COE) program at ISIR, Osaka University, Grants-in-Aid for Scientific Research (Grant Nos. 14205094, 13555189, and 15760490), and Special Coordination Funds for Promoting Science and Technology on “Nanohetero metallic materials” from the Ministry of Education, Culture, Sports, Science, and Technology, Japan.",

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AU - Kawamura, Juruchi

AU - Sato, Kazuhisa

AU - Hirotsu, Yoshihiko

N1 - Funding Information: The authors wish to thank Professor T. Kawai and Dr. H. Tanaka of ISIR, Osaka University, for their help with the SQUID measurement. This study was supported by the Center of Excellence (COE) program at ISIR, Osaka University, Grants-in-Aid for Scientific Research (Grant Nos. 14205094, 13555189, and 15760490), and Special Coordination Funds for Promoting Science and Technology on “Nanohetero metallic materials” from the Ministry of Education, Culture, Sports, Science, and Technology, Japan.

PY - 2004/10/1

Y1 - 2004/10/1

N2 - The fabrication of exchange-coupled α-Fe/L10-FePd nanocomposite particles, by annealing the Fe/Pd nanocomplex particles, was analyzed. It was observed that two regions composed of α-Fe and L1 0-FePd coexisted in each nanoparticle separated by a diffusion boundary. It was also observed that there was a gradual increase in the saturation magnetization with increase in the volume ratio of the α-Fe region. The results show that an exchange coupling existed between α-Fe and L10-FePd crystallites connected coherently with each other within the nanoparticles.

AB - The fabrication of exchange-coupled α-Fe/L10-FePd nanocomposite particles, by annealing the Fe/Pd nanocomplex particles, was analyzed. It was observed that two regions composed of α-Fe and L1 0-FePd coexisted in each nanoparticle separated by a diffusion boundary. It was also observed that there was a gradual increase in the saturation magnetization with increase in the volume ratio of the α-Fe region. The results show that an exchange coupling existed between α-Fe and L10-FePd crystallites connected coherently with each other within the nanoparticles.

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Fabrication of exchange-coupled α-Fe/L1₀-FePd nanocomposite isolated particles

Abstract

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