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| 001 | 878263 | ||
| 005 | 20210130005520.0 | ||
| 024 | 7 | _ | |a 10.1021/acs.nanolett.0c00578 |2 doi |
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| 100 | 1 | _ | |a Llandro, Justin |0 0000-0002-1362-6083 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Visualizing Magnetic Structure in 3D Nanoscale Ni–Fe Gyroid Networks |
| 260 | _ | _ | |a Washington, DC |c 2020 |b ACS Publ. |
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| 520 | _ | _ | |a Arrays of interacting 2D nanomagnets display unprecedented electromagnetic properties via collective effects, demonstrated in artificial spin ices and magnonic crystals. Progress toward 3D magnetic metamaterials is hampered by two challenges: fabricating 3D structures near intrinsic magnetic length scales (sub-100 nm) and visualizing their magnetic configurations. Here, we fabricate and measure nanoscale magnetic gyroids, periodic chiral networks comprising nanowire-like struts forming three-connected vertices. Via block copolymer templating, we produce Ni75Fe25 single-gyroid and double-gyroid (an inversion pair of single-gyroids) nanostructures with a 42 nm unit cell and 11 nm diameter struts, comparable to the exchange length in Ni–Fe. We visualize their magnetization distributions via off-axis electron holography with nanometer spatial resolution and interpret the patterns using finite-element micromagnetic simulations. Our results suggest an intricate, frustrated remanent state which is ferromagnetic but without a unique equilibrium configuration, opening new possibilities for collective phenomena in magnetism, including 3D magnonic crystals and unconventional computing. |
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| 536 | _ | _ | |a 3D MAGiC - Three-dimensional magnetization textures: Discovery and control on the nanoscale (856538) |0 G:(EU-Grant)856538 |c 856538 |f ERC-2019-SyG |x 1 |
| 536 | _ | _ | |a IMAGINE - Imaging Magnetism in Nanostructures using Electron Holography (320832) |0 G:(EU-Grant)320832 |c 320832 |f ERC-2012-ADG_20120216 |x 2 |
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| 700 | 1 | _ | |a Cimorra, Christian |0 P:(DE-HGF)0 |b 10 |
| 700 | 1 | _ | |a Steiner, Ullrich |0 0000-0001-5936-339X |b 11 |
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| 700 | 1 | _ | |a Ohno, Hideo |0 P:(DE-HGF)0 |b 15 |
| 773 | _ | _ | |a 10.1021/acs.nanolett.0c00578 |g Vol. 20, no. 5, p. 3642 - 3650 |0 PERI:(DE-600)2048866-X |n 5 |p 3642 - 3650 |t Nano letters |v 20 |y 2020 |x 1530-6992 |
| 856 | 4 | _ | |y Published on 2020-04-06. Available in OpenAccess from 2021-04-06. |u https://juser.fz-juelich.de/record/878263/files/GyroidEH_NanoLett_final_modified.pdf |
| 856 | 4 | _ | |y Published on 2020-04-06. Available in OpenAccess from 2021-04-06. |x pdfa |u https://juser.fz-juelich.de/record/878263/files/GyroidEH_NanoLett_final_modified.pdf?subformat=pdfa |
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