Nanoscale magnetic bubbles in Nd2Fe14 B at room temperature
He Y, Helm T, Soldatov I, Schneider S, Pohl D, Srivastava AK, Sharma AK, Kroder J, Schnelle W, Schaefer R, Rellinghaus B, Fecher GH, Parkin SSP, Felser C (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 105
Article Number: 064426
Journal Issue: 6
DOI: 10.1103/PhysRevB.105.064426
Abstract
The increasing demand for computer data storage with a higher recording density can be addressed by using smaller magnetic objects, such as bubble domains. Small bubbles predominantly require a strong saturation magnetization combined with a large magnetocrystalline anisotropy to resist self-demagnetization. These conditions are well satisfied for highly anisotropic materials. Here, we study the domain structure of thin Nd2Fe14B lamellae. Magnetic bubbles with a minimum diameter of 74 nm were observed at room temperature, approaching even the range of magnetic skyrmions. The stripe domain width and the bubble size are both thickness dependent. Furthermore, a kind of bubble was observed below the spin-reorientation transition temperature that combine bubbles with opposite helicity. In this paper, we reveal Nd2Fe14B to be a good candidate for a high-density magnetic bubble-based memory.
Involved external institutions
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Technische Universität Dresden
Germany (DE)
Max-Planck-Institut für Mikrostrukturphysik (MSP) / Max Planck Institute for Microstructure Physics
Germany (DE)
Germany (DE)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Technische Universität Dresden
Germany (DE)
Max-Planck-Institut für Mikrostrukturphysik (MSP) / Max Planck Institute for Microstructure Physics
Germany (DE)
How to cite
APA:
He, Y., Helm, T., Soldatov, I., Schneider, S., Pohl, D., Srivastava, A.K.,... Felser, C. (2022). Nanoscale magnetic bubbles in Nd2Fe14 B at room temperature. Physical Review B, 105(6). https://doi.org/10.1103/PhysRevB.105.064426
MLA:
He, Yangkun, et al. "Nanoscale magnetic bubbles in Nd2Fe14 B at room temperature." Physical Review B 105.6 (2022).
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