Arrangement of FePt nanocubes utilizing chemical binding selectivity

Takuma Hachisu, Wataru Sato, Atsushi Sugiyama, Tetsuya Osaka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This study on future ultrahigh density magnetic recording devices aims to develop a technique for arranging FePt nanocubes on a substrate by using organosilane as an interlayer. An array of FePt nanocubes was formed by chemical synthesis, utilizing the Pt-S binding between the SH functional group in (3-mercaptopropyl)trimethoxysilane and Pt in the FePt nanocubes. The morphology of the FePt nanocube array on the substrate was characterized using atomic force microscopy and plan-view scanning electron microscopy, which revealed that the array was a monolayer. After SiO2 was coated by chemical vapor deposition as a protective layer for sintering prevention, annealing was carried out at 900°C for 3 h in a reducing atmosphere to transform the crystal structure of the FePt nanocubes to the L 10 phase. X-ray diffraction results revealed that the annealed FePt nanocube array had a FePt(110) orientation and L10 phases such as (001) and (110). The Pt-S binding did not obstruct the L10 ordering of FePt. Consequently, a method for arranging nanoparticles by using the organic molecules with functional groups that can interact with nanoparticle selectivity as an interlayer can be applied as a formation technique for arranging a wide range of nanoparticles.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume157
Issue number9
DOIs
Publication statusPublished - 2010

Fingerprint

selectivity
Nanoparticles
Functional groups
nanoparticles
interlayers
Magnetic recording
Substrates
Chemical vapor deposition
Monolayers
Atomic force microscopy
magnetic recording
Sintering
Crystal structure
Annealing
X ray diffraction
sintering
Scanning electron microscopy
Molecules
vapor deposition
atomic force microscopy

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Arrangement of FePt nanocubes utilizing chemical binding selectivity. / Hachisu, Takuma; Sato, Wataru; Sugiyama, Atsushi; Osaka, Tetsuya.

In: Journal of the Electrochemical Society, Vol. 157, No. 9, 2010.

Research output: Contribution to journalArticle

Hachisu, Takuma ; Sato, Wataru ; Sugiyama, Atsushi ; Osaka, Tetsuya. / Arrangement of FePt nanocubes utilizing chemical binding selectivity. In: Journal of the Electrochemical Society. 2010 ; Vol. 157, No. 9.
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