Nanopatterned L10-FePt nanoparticles from single-source metallopolymer precursors for potential application in ferromagnetic bit-patterned media magnetic recording

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

doi:10.1039/c6py00714g

Nanopatterned L1₀-FePt nanoparticles from single-source metallopolymer precursors for potential application in ferromagnetic bit-patterned media magnetic recording

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

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

34 Citations (Scopus)

Abstract

Bit-patterned media (BPM) with a precise stoichiometry ratio of Fe and Pt atoms are promising for future high areal density magnetic recording. Here, we report a new FePt-containing metallopolymer P as the single-source precursor for the synthesis of magnetic metal alloy nanoparticles. This polymer was synthesized from a random copolymer poly(styrene-4-ethynylstyrene) PES-PS and the bimetallic precursor TPy-FePt ([Pt(4′-ferrocenyl-(N^N^N))Cl]Cl) by the CuI-catalyzed dehydrohalogenation. After pyrolysis of P, the stoichiometry of Fe and Pt atoms in the synthesized nanoparticles is nearly close to 1:1, which is more precise than that by using TPy-FePt as the precursor. Also, polymer P is more suitable for patterning by high-throughput nanoimprint lithography (NIL) compared to TPy-FePt. Ferromagnetic nanolines, potentially useful for fabricating bit-patterned magnetic recording media, were successfully obtained from P and fully characterized.

Original language	English
Pages (from-to)	4467-4475
Number of pages	9
Journal	Polymer Chemistry
Volume	7
Issue number	27
DOIs	https://doi.org/10.1039/c6py00714g
Publication status	Published - 21 Jul 2016

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@article{dd6508af0f6e4491a9c870f76ab3a085,

title = "Nanopatterned L10-FePt nanoparticles from single-source metallopolymer precursors for potential application in ferromagnetic bit-patterned media magnetic recording",

abstract = "Bit-patterned media (BPM) with a precise stoichiometry ratio of Fe and Pt atoms are promising for future high areal density magnetic recording. Here, we report a new FePt-containing metallopolymer P as the single-source precursor for the synthesis of magnetic metal alloy nanoparticles. This polymer was synthesized from a random copolymer poly(styrene-4-ethynylstyrene) PES-PS and the bimetallic precursor TPy-FePt ([Pt(4′-ferrocenyl-(N\textasciicircum{}N\textasciicircum{}N))Cl]Cl) by the CuI-catalyzed dehydrohalogenation. After pyrolysis of P, the stoichiometry of Fe and Pt atoms in the synthesized nanoparticles is nearly close to 1:1, which is more precise than that by using TPy-FePt as the precursor. Also, polymer P is more suitable for patterning by high-throughput nanoimprint lithography (NIL) compared to TPy-FePt. Ferromagnetic nanolines, potentially useful for fabricating bit-patterned magnetic recording media, were successfully obtained from P and fully characterized.",

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

note = "C.-L. Ho thanks Hong Kong Baptist University (FRG1/13-14/066 and FRG2/13-14/078) the National Natural Science Foundation of China (Grant No. 21504074) and the Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ20140818163041143) for their financial support. W.-Y. Wong acknowledges the financial support from the National Natural Science Foundation of China (Grant No. 51373145), the Hong Kong Research Grants Council (HKBU203312), the Areas of Excellence Scheme, University Grants Committee of HKSAR (AoE/P-03/08), the Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ 20140419130507116) and Hong Kong Baptist University (FRG2/13-14/083). S.-C. Yiu acknowledges the support from “Mr Kwok Yat Wai and Madam Kwok Chung Bo Fun Graduate School Development Fund”. C.-W. Leung acknowledges the support of RGC-GRF (The Hong Kong Polytechnic University 153015/14P) and The Hong Kong Polytechnic University (1-ZE25).",

year = "2016",

month = jul,

day = "21",

doi = "10.1039/c6py00714g",

language = "English",

volume = "7",

pages = "4467--4475",

journal = "Polymer Chemistry",

issn = "1759-9954",

publisher = "Royal Society of Chemistry",

number = "27",

}

TY - JOUR

T1 - Nanopatterned L10-FePt nanoparticles from single-source metallopolymer precursors for potential application in ferromagnetic bit-patterned media magnetic recording

AU - Meng, Zhengong

AU - Li, Guijun

AU - Ng, Sheung Mei

AU - Wong, Hon Fai

AU - Yiu, Sze Chun

AU - Ho, Cheuk Lam

AU - Leung, Chi Wah

AU - Wong, Wai Yeung

N1 - C.-L. Ho thanks Hong Kong Baptist University (FRG1/13-14/066 and FRG2/13-14/078) the National Natural Science Foundation of China (Grant No. 21504074) and the Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ20140818163041143) for their financial support. W.-Y. Wong acknowledges the financial support from the National Natural Science Foundation of China (Grant No. 51373145), the Hong Kong Research Grants Council (HKBU203312), the Areas of Excellence Scheme, University Grants Committee of HKSAR (AoE/P-03/08), the Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ 20140419130507116) and Hong Kong Baptist University (FRG2/13-14/083). S.-C. Yiu acknowledges the support from “Mr Kwok Yat Wai and Madam Kwok Chung Bo Fun Graduate School Development Fund”. C.-W. Leung acknowledges the support of RGC-GRF (The Hong Kong Polytechnic University 153015/14P) and The Hong Kong Polytechnic University (1-ZE25).

PY - 2016/7/21

Y1 - 2016/7/21

N2 - Bit-patterned media (BPM) with a precise stoichiometry ratio of Fe and Pt atoms are promising for future high areal density magnetic recording. Here, we report a new FePt-containing metallopolymer P as the single-source precursor for the synthesis of magnetic metal alloy nanoparticles. This polymer was synthesized from a random copolymer poly(styrene-4-ethynylstyrene) PES-PS and the bimetallic precursor TPy-FePt ([Pt(4′-ferrocenyl-(N^N^N))Cl]Cl) by the CuI-catalyzed dehydrohalogenation. After pyrolysis of P, the stoichiometry of Fe and Pt atoms in the synthesized nanoparticles is nearly close to 1:1, which is more precise than that by using TPy-FePt as the precursor. Also, polymer P is more suitable for patterning by high-throughput nanoimprint lithography (NIL) compared to TPy-FePt. Ferromagnetic nanolines, potentially useful for fabricating bit-patterned magnetic recording media, were successfully obtained from P and fully characterized.

AB - Bit-patterned media (BPM) with a precise stoichiometry ratio of Fe and Pt atoms are promising for future high areal density magnetic recording. Here, we report a new FePt-containing metallopolymer P as the single-source precursor for the synthesis of magnetic metal alloy nanoparticles. This polymer was synthesized from a random copolymer poly(styrene-4-ethynylstyrene) PES-PS and the bimetallic precursor TPy-FePt ([Pt(4′-ferrocenyl-(N^N^N))Cl]Cl) by the CuI-catalyzed dehydrohalogenation. After pyrolysis of P, the stoichiometry of Fe and Pt atoms in the synthesized nanoparticles is nearly close to 1:1, which is more precise than that by using TPy-FePt as the precursor. Also, polymer P is more suitable for patterning by high-throughput nanoimprint lithography (NIL) compared to TPy-FePt. Ferromagnetic nanolines, potentially useful for fabricating bit-patterned magnetic recording media, were successfully obtained from P and fully characterized.

UR - https://www.scopus.com/pages/publications/84979017708

U2 - 10.1039/c6py00714g

DO - 10.1039/c6py00714g

M3 - Journal article

AN - SCOPUS:84979017708

SN - 1759-9954

VL - 7

SP - 4467

EP - 4475

JO - Polymer Chemistry

JF - Polymer Chemistry

IS - 27

ER -

Nanopatterned L1₀-FePt nanoparticles from single-source metallopolymer precursors for potential application in ferromagnetic bit-patterned media magnetic recording

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