Injection of synthesized FePt nanoparticles in hole-patterns for bit patterned media

Takuma Hachisu, Wataru Sato, Shugo Ishizuka, Atsushi Sugiyama, Jun Mizuno, Tetsuya Osaka

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

FePt nanoparticles of uniform sizes, compositions, and crystal structures can be obtained by chemical synthesis. Additionally, the nanoparticles can be well dispersed by the adsorption of a surfactant on the nanoparticle surface. Previously, the immobilization of FePt nanoparticles on a thermal oxide Si substrate was carried out by chemical synthesis, utilizing the PtS bonding between the -SH functional group in (3-mercaptopropyl)trimethoxysilane, MPTMS and Pt in FePt nanoparticles. However, controlling FePt nanoparticle arrays by this synthesis method was very difficult. In the present study, we attempted to control the distortion of the arrangement of FePt nanoparticles using an MPTMS layer modified with a silane coupling reaction and a geometrical structure prepared by ultraviolet nanoimprint lithography (UV-NIL). In this study, the hole-patterns used for the geometrical structure on Si(1 0 0) were 200 nm wide, 40 nm deep, and had a 500 nm pitch. The 5.6 nm FePt nanoparticles were used to coat the hole-patterns by using a picoliter pipette. An XHR-SEM image clearly revealed that the FePt nanoparticles were successfully arranged as a single layer with an average pitch of 10.0 nm by PtS bonding in the hole-patterns on Si(1 0 0).

Original languageEnglish
Pages (from-to)303-308
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume324
Issue number3
DOIs
Publication statusPublished - 2012 Feb

Fingerprint

injection
Nanoparticles
nanoparticles
synthesis
pipettes
Nanoimprint lithography
Silanes
immobilization
Surface-Active Agents
silanes
Oxides
Functional groups
Surface active agents
lithography
Crystal structure
surfactants
Adsorption
Scanning electron microscopy
scanning electron microscopy
crystal structure

Keywords

  • Bit patterned media
  • Chemical bonding
  • Geometrical structure
  • Synthesized FePt nanoparticle

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Injection of synthesized FePt nanoparticles in hole-patterns for bit patterned media. / Hachisu, Takuma; Sato, Wataru; Ishizuka, Shugo; Sugiyama, Atsushi; Mizuno, Jun; Osaka, Tetsuya.

In: Journal of Magnetism and Magnetic Materials, Vol. 324, No. 3, 02.2012, p. 303-308.

Research output: Contribution to journalArticle

Hachisu, Takuma ; Sato, Wataru ; Ishizuka, Shugo ; Sugiyama, Atsushi ; Mizuno, Jun ; Osaka, Tetsuya. / Injection of synthesized FePt nanoparticles in hole-patterns for bit patterned media. In: Journal of Magnetism and Magnetic Materials. 2012 ; Vol. 324, No. 3. pp. 303-308.
@article{e8ee336c33554928818bcd623717fa8b,
title = "Injection of synthesized FePt nanoparticles in hole-patterns for bit patterned media",
abstract = "FePt nanoparticles of uniform sizes, compositions, and crystal structures can be obtained by chemical synthesis. Additionally, the nanoparticles can be well dispersed by the adsorption of a surfactant on the nanoparticle surface. Previously, the immobilization of FePt nanoparticles on a thermal oxide Si substrate was carried out by chemical synthesis, utilizing the PtS bonding between the -SH functional group in (3-mercaptopropyl)trimethoxysilane, MPTMS and Pt in FePt nanoparticles. However, controlling FePt nanoparticle arrays by this synthesis method was very difficult. In the present study, we attempted to control the distortion of the arrangement of FePt nanoparticles using an MPTMS layer modified with a silane coupling reaction and a geometrical structure prepared by ultraviolet nanoimprint lithography (UV-NIL). In this study, the hole-patterns used for the geometrical structure on Si(1 0 0) were 200 nm wide, 40 nm deep, and had a 500 nm pitch. The 5.6 nm FePt nanoparticles were used to coat the hole-patterns by using a picoliter pipette. An XHR-SEM image clearly revealed that the FePt nanoparticles were successfully arranged as a single layer with an average pitch of 10.0 nm by PtS bonding in the hole-patterns on Si(1 0 0).",
keywords = "Bit patterned media, Chemical bonding, Geometrical structure, Synthesized FePt nanoparticle",
author = "Takuma Hachisu and Wataru Sato and Shugo Ishizuka and Atsushi Sugiyama and Jun Mizuno and Tetsuya Osaka",
year = "2012",
month = "2",
doi = "10.1016/j.jmmm.2010.12.023",
language = "English",
volume = "324",
pages = "303--308",
journal = "Journal of Magnetism and Magnetic Materials",
issn = "0304-8853",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - Injection of synthesized FePt nanoparticles in hole-patterns for bit patterned media

AU - Hachisu, Takuma

AU - Sato, Wataru

AU - Ishizuka, Shugo

AU - Sugiyama, Atsushi

AU - Mizuno, Jun

AU - Osaka, Tetsuya

PY - 2012/2

Y1 - 2012/2

N2 - FePt nanoparticles of uniform sizes, compositions, and crystal structures can be obtained by chemical synthesis. Additionally, the nanoparticles can be well dispersed by the adsorption of a surfactant on the nanoparticle surface. Previously, the immobilization of FePt nanoparticles on a thermal oxide Si substrate was carried out by chemical synthesis, utilizing the PtS bonding between the -SH functional group in (3-mercaptopropyl)trimethoxysilane, MPTMS and Pt in FePt nanoparticles. However, controlling FePt nanoparticle arrays by this synthesis method was very difficult. In the present study, we attempted to control the distortion of the arrangement of FePt nanoparticles using an MPTMS layer modified with a silane coupling reaction and a geometrical structure prepared by ultraviolet nanoimprint lithography (UV-NIL). In this study, the hole-patterns used for the geometrical structure on Si(1 0 0) were 200 nm wide, 40 nm deep, and had a 500 nm pitch. The 5.6 nm FePt nanoparticles were used to coat the hole-patterns by using a picoliter pipette. An XHR-SEM image clearly revealed that the FePt nanoparticles were successfully arranged as a single layer with an average pitch of 10.0 nm by PtS bonding in the hole-patterns on Si(1 0 0).

AB - FePt nanoparticles of uniform sizes, compositions, and crystal structures can be obtained by chemical synthesis. Additionally, the nanoparticles can be well dispersed by the adsorption of a surfactant on the nanoparticle surface. Previously, the immobilization of FePt nanoparticles on a thermal oxide Si substrate was carried out by chemical synthesis, utilizing the PtS bonding between the -SH functional group in (3-mercaptopropyl)trimethoxysilane, MPTMS and Pt in FePt nanoparticles. However, controlling FePt nanoparticle arrays by this synthesis method was very difficult. In the present study, we attempted to control the distortion of the arrangement of FePt nanoparticles using an MPTMS layer modified with a silane coupling reaction and a geometrical structure prepared by ultraviolet nanoimprint lithography (UV-NIL). In this study, the hole-patterns used for the geometrical structure on Si(1 0 0) were 200 nm wide, 40 nm deep, and had a 500 nm pitch. The 5.6 nm FePt nanoparticles were used to coat the hole-patterns by using a picoliter pipette. An XHR-SEM image clearly revealed that the FePt nanoparticles were successfully arranged as a single layer with an average pitch of 10.0 nm by PtS bonding in the hole-patterns on Si(1 0 0).

KW - Bit patterned media

KW - Chemical bonding

KW - Geometrical structure

KW - Synthesized FePt nanoparticle

UR - http://www.scopus.com/inward/record.url?scp=80053601526&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80053601526&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2010.12.023

DO - 10.1016/j.jmmm.2010.12.023

M3 - Article

AN - SCOPUS:80053601526

VL - 324

SP - 303

EP - 308

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

IS - 3

ER -