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

Research output: Contribution to journalArticle (Academic Journal)peer-review

38 Citations (Scopus)
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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 languageEnglish
Pages (from-to)731-738
Number of pages8
JournalNanoscale
Volume9
Issue number2
Early online date29 Nov 2016
DOIs
Publication statusPublished - 14 Jan 2017

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