Hydrogen-induced crystal structural transformation of FePt nanoparticles at low temperature

Masafumi Nakaya; Masayuki Kanehara; Miho Yamauchi; Hiroshi Kitagawa; Toshiharu Teranishi

doi:10.1021/jp072201w

Hydrogen-induced crystal structural transformation of FePt nanoparticles at low temperature

Masafumi Nakaya, Masayuki Kanehara, Miho Yamauchi, Hiroshi Kitagawa, Toshiharu Teranishi

Department of Applied Molecular Chemistry

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

31 Citations (Scopus)

Abstract

The hydrogen-induced crystal structural transformation of FePt nanoparticles from a chemically disordered face-centered-cubic (fee) structure to a chemically ordered L₁₀ structure was first demonstrated at around 300°C. The hydrogen treatment at low temperature led to not complete but considerable suppression of the nanoparticle coalescence. The obtained L₁₀-FePt nanoparticles exhibited ferromagnetic property with large coercivity at room temperature. The ordering degree of FePt nanoparticles was dependent on both the hydrogen pressure and treatment time.

Original language	English
Pages (from-to)	7231-7234
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	20
DOIs	https://doi.org/10.1021/jp072201w
Publication status	Published - May 24 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/jp072201w

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abstract = "The hydrogen-induced crystal structural transformation of FePt nanoparticles from a chemically disordered face-centered-cubic (fee) structure to a chemically ordered L10 structure was first demonstrated at around 300°C. The hydrogen treatment at low temperature led to not complete but considerable suppression of the nanoparticle coalescence. The obtained L10-FePt nanoparticles exhibited ferromagnetic property with large coercivity at room temperature. The ordering degree of FePt nanoparticles was dependent on both the hydrogen pressure and treatment time.",

author = "Masafumi Nakaya and Masayuki Kanehara and Miho Yamauchi and Hiroshi Kitagawa and Toshiharu Teranishi",

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AU - Nakaya, Masafumi

AU - Kanehara, Masayuki

AU - Yamauchi, Miho

AU - Kitagawa, Hiroshi

AU - Teranishi, Toshiharu

PY - 2007/5/24

Y1 - 2007/5/24

N2 - The hydrogen-induced crystal structural transformation of FePt nanoparticles from a chemically disordered face-centered-cubic (fee) structure to a chemically ordered L10 structure was first demonstrated at around 300°C. The hydrogen treatment at low temperature led to not complete but considerable suppression of the nanoparticle coalescence. The obtained L10-FePt nanoparticles exhibited ferromagnetic property with large coercivity at room temperature. The ordering degree of FePt nanoparticles was dependent on both the hydrogen pressure and treatment time.

AB - The hydrogen-induced crystal structural transformation of FePt nanoparticles from a chemically disordered face-centered-cubic (fee) structure to a chemically ordered L10 structure was first demonstrated at around 300°C. The hydrogen treatment at low temperature led to not complete but considerable suppression of the nanoparticle coalescence. The obtained L10-FePt nanoparticles exhibited ferromagnetic property with large coercivity at room temperature. The ordering degree of FePt nanoparticles was dependent on both the hydrogen pressure and treatment time.

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ER -

Hydrogen-induced crystal structural transformation of FePt nanoparticles at low temperature

Abstract

All Science Journal Classification (ASJC) codes

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