Patterning of L10 FePt Nanoparticles with Ultra-High Coercivity for Bit-Patterned Media

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

doi:10.1039/C6NR07863J

Patterning of L10 FePt Nanoparticles with Ultra-High Coercivity for Bit-Patterned Media

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

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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/H2 atmospheres shows that the presence of H2 in 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
Early online date	29 Nov 2016
DOIs	https://doi.org/10.1039/C6NR07863J
Publication status	Published - 14 Jan 2017

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This is the author accepted manuscript (AAM). The final published version (version of record) is available online via RSC at http://pubs.rsc.org/en/content/articlelanding/2016/nr/c6nr07863j#!divAbstract. Please refer to any applicable terms of use of the publisher.
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title = "Patterning of L10 FePt 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/H2 atmospheres shows that the presence of H2 in 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 Li Guijun and Hon-Fai Wong and Sheung-Mei Ng and Sze-Chum Yiu and Cheuk-Lam Ho and Chi-Wah Leung and Ian Manners and Wai-Yeung Wong",

year = "2017",

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doi = "10.1039/C6NR07863J",

language = "English",

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T1 - Patterning of L10 FePt Nanoparticles with Ultra-High Coercivity for Bit-Patterned Media

AU - Meng, Zhengong

AU - Guijun, Li

AU - Wong, Hon-Fai

AU - Ng, Sheung-Mei

AU - Yiu, Sze-Chum

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/H2 atmospheres shows that the presence of H2 in 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/H2 atmospheres shows that the presence of H2 in 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.

U2 - 10.1039/C6NR07863J

DO - 10.1039/C6NR07863J

M3 - Article (Academic Journal)

SN - 2040-3364

VL - 9

SP - 731

EP - 738

JO - Nanoscale

JF - Nanoscale

IS - 2

ER -

Patterning of L10 FePt Nanoparticles with Ultra-High Coercivity for Bit-Patterned Media

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