Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111086
Title: Nanoscale Magnetic Bubbles in Nd2Fe14 B at Room Temperature
Authors: He, Y.
Helm, T.
Soldatov, I.
Schneider, S.
Pohl, D.
Srivastava, A. K.
Sharma, A. K.
Kroder, J.
Schnelle, W.
Schaefer, R.
Rellinghaus, B.
Fecher, G. H.
Parkin, S. S. P.
Felser, C.
Issue Date: 2022
Publisher: American Physical Society
American Physical Society (APS)
Citation: Nanoscale Magnetic Bubbles in Nd2Fe14 B at Room Temperature / Y. He, T. Helm, I. Soldatov et al. // Physical Review B. — 2022. — Vol. 105. — Iss. 6. — 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. © 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.
Keywords: BINARY ALLOYS
BORON COMPOUNDS
MAGNETOCRYSTALLINE ANISOTROPY
NANOMAGNETICS
SATURATION MAGNETIZATION
ANISOTROPIC MATERIAL
BUBBLE DOMAINS
CONDITION
DATA STORAGE
DOMAIN STRUCTURE
MINIMUM DIAMETERS
RECORDING DENSITY
SELF-DEMAGNETIZATION
SKYRMIONS
STRIPE DOMAIN
DIGITAL STORAGE
URI: http://hdl.handle.net/10995/111086
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85126042777
ISSN: 2469-9950
metadata.dc.description.sponsorship: This paper was financially supported by an Advanced Grant from the European Research Council (No. 742068) “TOPMAT,” the European Union's Horizon 2020 research and innovation program (No. 824123) “SKYTOP,” the European Union's Horizon 2020 research and innovation program (No. 766566) “ASPIN,” the Deutsche Forschungsgemeinschaft (Project-ID 258499086) “SFB 1143,” the Deutsche Forschungsgemeinschaft (DFG; Project-IDs FE 633/30-1, RE 1164/6-1, and LU 2261/2-1) “SPP Skyrmionics,” the DFG through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project-ID 39085490). I.S. would like to express his gratitude to the DFG for supporting this paper through Project SO 1623/2-1.
CORDIS project card: H2020: 824123
H2020: 766566
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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