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.
authors.affiliation: Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China. rwywong@hkbu.edu.hk clamho@hkbu.edu.hk.
authors.forename: Zhengong
authors.initials: Z
authors.lastname: Meng
authors.affiliation: Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China. dennis.leung@polyu.edu.hk.
authors.forename: Guijun
authors.initials: G
authors.lastname: Li
authors.affiliation: Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China. dennis.leung@polyu.edu.hk.
authors.forename: Hon-Fai
authors.initials: HF
authors.lastname: Wong
authors.affiliation: Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China. dennis.leung@polyu.edu.hk.
authors.forename: Sheung-Mei
authors.initials: SM
authors.lastname: Ng
authors.affiliation: Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China. rwywong@hkbu.edu.hk clamho@hkbu.edu.hk.
authors.forename: Sze-Chun
authors.initials: SC
authors.lastname: Yiu
authors.affiliation: Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China. rwywong@hkbu.edu.hk clamho@hkbu.edu.hk.
authors.forename: Cheuk-Lam
authors.initials: CL
authors.lastname: Ho
authors.affiliation: Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China. dennis.leung@polyu.edu.hk.
authors.forename: Chi-Wah
authors.initials: CW
authors.lastname: Leung
authors.affiliation: School of Chemistry, University of Bristol, Bristol, BS8 1TS, UK. Ian.Manners@bristol.ac.uk.
authors.forename: Ian
authors.initials: I
authors.lastname: Manners
authors.affiliation: Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China. rwywong@hkbu.edu.hk clamho@hkbu.edu.hk and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China. wai-yeung.wong@polyu.edu.hk.
authors.forename: Wai-Yeung
authors.initials: WY
authors.lastname: Wong