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Nano- and micro-patterning biotemplated magnetic CoPt arrays.
Galloway, Johanna and Bird, Scott and Talbot, Jennifer and Shepley, Philippa and Bradley, Ruth and Critchley, Kevin (2016) Nano- and micro-patterning biotemplated magnetic CoPt arrays. University of Leeds. [Dataset] https://doi.org/10.5518/43
Dataset description
Patterned thin-films of magnetic nanoparticles (MNPs) can be used to make high‑density data storage devices. High coercivity MNPs (e.g. L10 CoPt) are nano-patterned to create this bit-patterned media (BPM). This increases storage capacity by reducing bit size, which is highly desirable in developing smaller recording media for consumer devices . Conventional manufacture of BPM is not environmentally friendly as it uses high temperatures (500˚C) and high vacuum, which requires specialised equipment. To tackle these issues, we have taken inspiration from nature to create patterns of CoPt using a biotemplating peptide under mild conditions. Nano-patterning via interference lithography (IL) and micro-patterning using micro-contact printing (μCP) were used to create a peptide resistant mask onto a gold surface under ambient conditions. We redesigned a biotemplating peptide to self-assemble onto gold surfaces (cgsgktheihspllhk), and mineralised the patterns at 18˚C in water. Ferromagnetic CoPt is biotemplated by the immobilised peptides, and the patterned MNPs maintain stable magnetic domains. This bioinspired study offers an ecological route towards developing biotemplated.
| Additional information: | Dataset associated with J. M. Galloway, S. M. Bird, J. E. Talbot, P. M. Shepley, R. C. Bradley, O. El-Zubir, D. A. Allwood, G. J. Leggett, J. J. Miles, S. S. Staniland and K. Critchley (2016) Nano- and micro-patterning biotemplated magnetic CoPt arrays. Nanoscale, 8, 11738-11747. DOI: http://dx.doi.org/10.1039/C6NR03330J | ||||||
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| Keywords: | Bit patterned media, nanoscale | ||||||
| Subjects: | F000 - Physical sciences > F300 - Physics | ||||||
| Divisions: | Faculty of Engineering and Physical Sciences > Centre for Molecular Nanoscience (CMNS) Faculty of Engineering and Physical Sciences > School of Physics and Astronomy |
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| License: | Creative Commons Attribution 4.0 International (CC BY 4.0) | ||||||
| Date deposited: | 07 Jun 2016 07:42 | ||||||
| URI: | http://archive.researchdata.leeds.ac.uk/id/eprint/49 | ||||||
Files
Documentation
Dataset description [27kB]  |
Dataset description [27kB] 
Dataset description [27kB] Data
F2_EM_patterns.png [909kB]  |
F3_aspect_binned.txt [759B] |
F3_EM_grainsize.png [653kB]  |
F3_grainsize_and_shape.txt [45kB] |
F3_grainsize_and_shape.xlsx [65kB] |
F3_grainsize_binned.txt [1kB] |
F4_all_EDX.txt [90kB] |
F4_all_EDX.xlsx [103kB] |
F4_all_XRD.txt [350kB] |
F4_all_XRD.xlsx [299kB] |
F4_EDX_XRD.png [408kB]  |
F5_MFM.png [897kB]  |
F5a_and_S12a_topography.txt [2MB] |
F5a_and_S12b_phase.txt [2MB] |
F5b_and_S12c_topography.txt [2MB] |
F5b_and_S12d_phase.txt [2MB] |
F5c_and_S13a_topography.txt [2MB] |
F5c_and_S13b_phase.txt [2MB] |
F5d_and_S13c_topography.txt [2MB] |
F5d_and_S13d_phase.txt [2MB] |
S2_EM_lines.png [409kB]  |
S3_EM_squares.png [439kB]  |
S4_EM_warm.png [268kB]  |
S7_EM_SAED.png [525kB]  |
S8_to_10_VSM_and_MOKE.xlsx [72kB] |