Fabrication and electron holography characterization of FePt alloy nanorods

R. C. Che, M. Takeguchi, Masayuki Shimojo, W. Zhang, K. Furuya

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Well-aligned, ferromagnetic FePt nanorods have been fabricated by electron beam-induced deposition using an ultrahigh-vacuum scanning electron microscope. A mixture gas of iron pentacarbonyl and cyclopentadienylplatinum (IV) trimethyl was used as a precursor and post-annealing at 600 °C for 2 h was performed to accomplish the crystallization process. Each nanorod was composed of a chain of crystalline Fe-Pt alloy nanoparticles encapsulated within a carbon-containing sheath. The nanoparticles were identified to be face centered tetragonal (fct) FePt phase (L 10, P4mmm) by electron diffraction and high-resolution transmission electron microscopy (HRTEM). The residual magnetic flux density Br of the nanorods was evaluated to be about 1.53 T via off-axis electron holography, showing a strong ferromagnetic character.

Original languageEnglish
Article number223109
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume87
Issue number22
DOIs
Publication statusPublished - 2005
Externally publishedYes

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holography
nanorods
fabrication
nanoparticles
electrons
sheaths
ultrahigh vacuum
gas mixtures
magnetic flux
electron diffraction
flux density
electron microscopes
electron beams
crystallization
iron
transmission electron microscopy
annealing
scanning
carbon
high resolution

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Fabrication and electron holography characterization of FePt alloy nanorods. / Che, R. C.; Takeguchi, M.; Shimojo, Masayuki; Zhang, W.; Furuya, K.

In: Applied Physics Letters, Vol. 87, No. 22, 223109, 2005, p. 1-3.

Research output: Contribution to journalArticle

Che, R. C. ; Takeguchi, M. ; Shimojo, Masayuki ; Zhang, W. ; Furuya, K. / Fabrication and electron holography characterization of FePt alloy nanorods. In: Applied Physics Letters. 2005 ; Vol. 87, No. 22. pp. 1-3.
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