Nanomagnet arrays fabricated by electrodeposition using self-assembled anodic aluminium oxide templates
A nonlithographic technique that utilizes highly ordered anodic aluminium oxide (AAO) membranes as templates has been employed to fabricate Co–Pt nanomagnet arrays. In particular, nanowire magnets with various aspect-ratios have been produced using AAO templates. For 14 nm Co 87Pt 13 nanowire arrays...
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Published in | Microelectronic engineering Vol. 84; no. 5; pp. 1436 - 1439 |
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Main Authors | , |
Format | Journal Article Conference Proceeding |
Language | English |
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Amsterdam
Elsevier B.V
01.05.2007
Elsevier Science |
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Abstract | A nonlithographic technique that utilizes highly ordered anodic aluminium oxide (AAO) membranes as templates has been employed to fabricate Co–Pt nanomagnet arrays. In particular, nanowire magnets with various aspect-ratios have been produced using AAO templates. For 14
nm Co
87Pt
13 nanowire arrays, an estimated areal density of about 500
Gb/in.
2 is readily achievable by an alternating current technique. It has been observed that the growth rate of nanowires reduces significantly with the increasing of electrodeposition time. Measurement of magnetic properties reveals that the coercivity and squareness obtained with the applied magnetic field parallel to the wire axis change with the nanowire length; however, there is relatively little change on the magnetic characteristics along the hard axis. An overall perpendicular magnetic anisotropy is obtained for nanowire arrays with aspect ratio ranges from 3.6 to 17, indicating the dominance of shape anisotropy for all these nanostructured magnets. |
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AbstractList | A nonlithographic technique that utilizes highly ordered anodic aluminium oxide (AAO) membranes as templates has been employed to fabricate Co-Pt nanomagnet arrays. In particular, nanowire magnets with various aspect-ratios have been produced using AAO templates. For 14nm Co87Pt13 nanowire arrays, an estimated areal density of about 500Gb/in.2 is readily achievable by an alternating current technique. It has been observed that the growth rate of nanowires reduces significantly with the increasing of electrodeposition time. Measurement of magnetic properties reveals that the coercivity and squareness obtained with the applied magnetic field parallel to the wire axis change with the nanowire length; however, there is relatively little change on the magnetic characteristics along the hard axis. An overall perpendicular magnetic anisotropy is obtained for nanowire arrays with aspect ratio ranges from 3.6 to 17, indicating the dominance of shape anisotropy for all these nanostructured magnets. A nonlithographic technique that utilizes highly ordered anodic aluminium oxide (AAO) membranes as templates has been employed to fabricate Co–Pt nanomagnet arrays. In particular, nanowire magnets with various aspect-ratios have been produced using AAO templates. For 14 nm Co 87Pt 13 nanowire arrays, an estimated areal density of about 500 Gb/in. 2 is readily achievable by an alternating current technique. It has been observed that the growth rate of nanowires reduces significantly with the increasing of electrodeposition time. Measurement of magnetic properties reveals that the coercivity and squareness obtained with the applied magnetic field parallel to the wire axis change with the nanowire length; however, there is relatively little change on the magnetic characteristics along the hard axis. An overall perpendicular magnetic anisotropy is obtained for nanowire arrays with aspect ratio ranges from 3.6 to 17, indicating the dominance of shape anisotropy for all these nanostructured magnets. |
Author | Shen, Tiehan H. Li, Wuxia |
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Cites_doi | 10.1103/PhysRevB.56.14066 10.1063/1.1896439 10.1103/PhysRev.100.1060 10.1063/1.1852192 10.1063/1.1419032 10.1116/1.2110340 10.1063/1.1555835 10.1088/0953-8984/15/26/312 10.1063/1.1370986 10.1109/20.908726 |
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Keywords | 61.46.+w Nanomagnet AAO template 81.07.−b Self-assemble Electrodeposition 81.15.Pq Nanowire arrays 75.75.+a Self assembly Growth rate Aspect ratio Magnetic measurement Microelectronic fabrication Coercive force 81.07.-b Nanowires Perpendicular magnetic anisotropy Magnetic field Nanostructured materials Alternating current Magnetic properties |
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Snippet | A nonlithographic technique that utilizes highly ordered anodic aluminium oxide (AAO) membranes as templates has been employed to fabricate Co–Pt nanomagnet... A nonlithographic technique that utilizes highly ordered anodic aluminium oxide (AAO) membranes as templates has been employed to fabricate Co-Pt nanomagnet... |
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SubjectTerms | AAO template Applied sciences Electrodeposition Electronics Exact sciences and technology Microelectronic fabrication (materials and surfaces technology) Nanomagnet Nanowire arrays Self-assemble Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices |
Title | Nanomagnet arrays fabricated by electrodeposition using self-assembled anodic aluminium oxide templates |
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