Patterning of L10FePt nanoparticles with ultra-high coercivity for bit-patterned media

Zhengong Meng; Guijun Li; Hon Fai Wong; Sheung Mei Ng; Sze Chun Yiu; Cheuk Lam Ho; Chi Wah Leung; Ian Manners; Wai Yeung Wong

doi:10.1039/c6nr07863j

Patterning of L1₀FePt nanoparticles with ultra-high coercivity for bit-patterned media

Zhengong Meng
, Guijun Li
, Hon Fai Wong
, Sheung Mei Ng
, Sze Chun Yiu
, Cheuk Lam Ho
, Chi Wah Leung
, Ian Manners
, Wai Yeung Wong

Research output: Journal article publication › Journal article › Academic research › peer-review

48 Citations (Scopus)

Abstract

L10-ordered FePt nanoparticles (NPs) with ultra-high coercivity were directly prepared from a new metallopolyyne using a one-step pyrolysis method. The chemical ordering, morphology and magnetic properties of the as-synthesized FePt NPs have been studied. Magnetic measurements show the coercivity of these FePt NPs is as high as 3.6 T. Comparison of NPs synthesized under the Ar and Ar/H2atmospheres shows that the presence of H2in the annealing environment influences the nucleation and promotes the growth of L10-FePt NPs. Application of this metallopolymer for bit-patterned media was also demonstrated using nanoimprint lithography.

Original language	English
Pages (from-to)	731-738
Number of pages	8
Journal	Nanoscale
Volume	9
Issue number	2
DOIs	https://doi.org/10.1039/c6nr07863j
Publication status	Published - 14 Jan 2017

ASJC Scopus subject areas

General Materials Science

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10.1039/c6nr07863j

http://hdl.handle.net/10397/100407

Cite this

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title = "Patterning of L10FePt nanoparticles with ultra-high coercivity for bit-patterned media",

abstract = "L10-ordered FePt nanoparticles (NPs) with ultra-high coercivity were directly prepared from a new metallopolyyne using a one-step pyrolysis method. The chemical ordering, morphology and magnetic properties of the as-synthesized FePt NPs have been studied. Magnetic measurements show the coercivity of these FePt NPs is as high as 3.6 T. Comparison of NPs synthesized under the Ar and Ar/H2atmospheres shows that the presence of H2in the annealing environment influences the nucleation and promotes the growth of L10-FePt NPs. Application of this metallopolymer for bit-patterned media was also demonstrated using nanoimprint lithography.",

author = "Zhengong Meng and Guijun Li and Wong, \{Hon Fai\} and Ng, \{Sheung Mei\} and Yiu, \{Sze Chun\} and Ho, \{Cheuk Lam\} and Leung, \{Chi Wah\} and Ian Manners and Wong, \{Wai Yeung\}",

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AU - Meng, Zhengong

AU - Li, Guijun

AU - Wong, Hon Fai

AU - Ng, Sheung Mei

AU - Yiu, Sze Chun

AU - Ho, Cheuk Lam

AU - Leung, Chi Wah

AU - Manners, Ian

AU - Wong, Wai Yeung

PY - 2017/1/14

Y1 - 2017/1/14

N2 - L10-ordered FePt nanoparticles (NPs) with ultra-high coercivity were directly prepared from a new metallopolyyne using a one-step pyrolysis method. The chemical ordering, morphology and magnetic properties of the as-synthesized FePt NPs have been studied. Magnetic measurements show the coercivity of these FePt NPs is as high as 3.6 T. Comparison of NPs synthesized under the Ar and Ar/H2atmospheres shows that the presence of H2in the annealing environment influences the nucleation and promotes the growth of L10-FePt NPs. Application of this metallopolymer for bit-patterned media was also demonstrated using nanoimprint lithography.

AB - L10-ordered FePt nanoparticles (NPs) with ultra-high coercivity were directly prepared from a new metallopolyyne using a one-step pyrolysis method. The chemical ordering, morphology and magnetic properties of the as-synthesized FePt NPs have been studied. Magnetic measurements show the coercivity of these FePt NPs is as high as 3.6 T. Comparison of NPs synthesized under the Ar and Ar/H2atmospheres shows that the presence of H2in the annealing environment influences the nucleation and promotes the growth of L10-FePt NPs. Application of this metallopolymer for bit-patterned media was also demonstrated using nanoimprint lithography.

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DO - 10.1039/c6nr07863j

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EP - 738

JO - Nanoscale

JF - Nanoscale

IS - 2

ER -

Patterning of L1₀FePt nanoparticles with ultra-high coercivity for bit-patterned media

Abstract

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