Journal
NANOSCALE
Volume 8, Issue 13, Pages 7068-7074Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nr00034g
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Funding
- National Natural Science Foundation of China [61307030, 51373145]
- Hong Kong Research Grants Council [HKBU203312, PolyU 153015/14P, PolyU (1-ZE25)]
- Areas of Excellence Scheme, University Grants Committee of HKSAR [AoE/P-03/08]
- Science, Technology and Innovation Committee of Shenzhen Municipality [JCYJ 20140419130507116]
- Hong Kong Baptist University [FRG2/13-14/083]
- Hundred Talents Program of Shanxi Province
- Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi (OIT)
- Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province
- Natural Science Foundation for Young Scientists of Shanxi Province, China [2014021019-2]
- Outstanding Young Scholars Cultivating Program
- Shanxi Scholarship Council of China [2014-02]
- Datong City Science and Technology Research Projects
- Doctoral Scientific Research Foundation of Shanxi Datong University
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Ferromagnetic (L1(0) phase) CoPt alloy nanoparticles (NPs) with extremely high magnetocrystalline anisotropy are promising candidates for the next generation of ultrahigh-density data storage systems. It is a challenge to generate L1(0) CoPt NPs with high coercivity, controllable size, and a narrow size distribution. We report here the fabrication of L1(0) CoPt NPs by employing a heterobimetallic CoPt-containing polymer as a single-source precursor. The average size of the resulting L1(0) CoPt NPs is 3.4 nm with a reasonably narrow size standard deviation of 0.58 nm. The coercivity of L1(0) CoPt NPs is 0.54 T which is suitable for practical application. We also fabricated the L1(0) CoPt NP-based nanoline and nanodot arrays through nanoimprinting the polymer blend of CoPt-containing metallopolymer and polystyrene followed by pyrolysis. The successful transfer of the pre-defined patterns of the stamps onto the surface of the polymer blend implies that this material holds great application potential as a data storage medium.
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