Conversion of anisotropically phase-segregated Pd/γ-Fe 2O3 nanoparticles into exchange-coupled fct-FePd/α-Fe nanocomposite magnets

Toshiharu Teranishi; Ayako Wachi; Masayuki Kanehara; Tetsuya Shoji; Noritsugu Sakuma; Masafumi Nakaya

doi:10.1021/ja077921v

Conversion of anisotropically phase-segregated Pd/γ-Fe ₂O₃ nanoparticles into exchange-coupled fct-FePd/α-Fe nanocomposite magnets

Toshiharu Teranishi, Ayako Wachi, Masayuki Kanehara, Tetsuya Shoji, Noritsugu Sakuma, Masafumi Nakaya

Division of Process and System Engineering

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

54 Citations (Scopus)

Abstract

Exchange-coupled fct-FePd/α-Fe nanocomposite magnets were fabricated by converting anisotropically phase-segregated Pd/γ-Fe₂O₃ nanoparticles via the interfacial atom diffusion. The magnetically hard fct-FePd phases formed by the interdiffusion between α-Fe and fcc-Pd phases nearly preserve their sizes at the nanometer scale because they are surrounded by the α-Fe matrix. The VSM measurements reveal that the exchange coupling between the soft and hard phases has been realized.

Original language	English
Pages (from-to)	4210-4211
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	130
Issue number	13
DOIs	https://doi.org/10.1021/ja077921v
Publication status	Published - 2008 Apr 2

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja077921v

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Conversion of anisotropically phase-segregated Pd/γ-Fe ₂O₃ nanoparticles into exchange-coupled fct-FePd/α-Fe nanocomposite magnets. / Teranishi, Toshiharu; Wachi, Ayako; Kanehara, Masayuki; Shoji, Tetsuya; Sakuma, Noritsugu; Nakaya, Masafumi.

In: Journal of the American Chemical Society, Vol. 130, No. 13, 02.04.2008, p. 4210-4211.

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

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AU - Sakuma, Noritsugu

AU - Nakaya, Masafumi

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N2 - Exchange-coupled fct-FePd/α-Fe nanocomposite magnets were fabricated by converting anisotropically phase-segregated Pd/γ-Fe2O3 nanoparticles via the interfacial atom diffusion. The magnetically hard fct-FePd phases formed by the interdiffusion between α-Fe and fcc-Pd phases nearly preserve their sizes at the nanometer scale because they are surrounded by the α-Fe matrix. The VSM measurements reveal that the exchange coupling between the soft and hard phases has been realized.

AB - Exchange-coupled fct-FePd/α-Fe nanocomposite magnets were fabricated by converting anisotropically phase-segregated Pd/γ-Fe2O3 nanoparticles via the interfacial atom diffusion. The magnetically hard fct-FePd phases formed by the interdiffusion between α-Fe and fcc-Pd phases nearly preserve their sizes at the nanometer scale because they are surrounded by the α-Fe matrix. The VSM measurements reveal that the exchange coupling between the soft and hard phases has been realized.

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Conversion of anisotropically phase-segregated Pd/γ-Fe ₂O₃ nanoparticles into exchange-coupled fct-FePd/α-Fe nanocomposite magnets

Abstract

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