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  Nanoscale magnetic bubbles in Nd2Fe14B at room temperature

He, Y., Helm, T., Soldatov, I., Schneider, S., Pohl, D., Srivastava, A. K., et al. (2022). Nanoscale magnetic bubbles in Nd2Fe14B at room temperature. Physical Review B, 105(6): 064426, pp. 1-8. doi:10.1103/PhysRevB.105.064426.

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He, Yangkun1, Autor           
Helm, Toni2, Autor           
Soldatov, Ivan3, Autor
Schneider, Sebastian3, Autor
Pohl, Darius3, Autor
Srivastava, Abhay Kant3, Autor
Sharma, Ankit Kumar3, Autor
Kroder, Johannes1, Autor           
Schnelle, Walter4, Autor           
Schaefer, Rudolf3, Autor
Rellinghaus, Bernd3, Autor
Fecher, Gerhard H.5, Autor           
Parkin, Stuart S. P.3, Autor
Felser, Claudia6, Autor           
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Physics of Microstructured Quantum Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_2466701              
3External Organizations, ou_persistent22              
4Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
5Gerhard Fecher, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863431              
6Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Zusammenfassung: 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.

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Sprache(n): eng - English
 Datum: 2022-02-182022-02-18
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: ISI: 000761167800005
DOI: 10.1103/PhysRevB.105.064426
 Art des Abschluß: -

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Titel: Physical Review B
  Kurztitel : Phys. Rev. B
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Woodbury, NY : American Physical Society
Seiten: - Band / Heft: 105 (6) Artikelnummer: 064426 Start- / Endseite: 1 - 8 Identifikator: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008