Tilted X-Ray holography of magnetic bubbles in MnNiGa lamellae
| Autor: | Aleš Štefančič, Peter D. Hatton, M. T. Birch, Erick Burgos-Parra, N. Bukin, Angus Laurenson, Feodor Y. Ogrin, Geetha Balakrishnan, Murray Wilson, Horia Popescu, L. A. Turnbull |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Condensed matter physics Magnetism Texture (cosmology) General Engineering Holography Nucleation General Physics and Astronomy 02 engineering and technology Disclination 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Condensed Matter::Materials Science Ferromagnetism TA law General Materials Science 0210 nano-technology Spin (physics) Nanoscopic scale QC |
| Zdroj: | ACS Nano ACS nano, 2021, Vol.15(1), pp.387-395 [Peer Reviewed Journal] |
| ISSN: | 1936-0851 |
| Popis: | Nanoscopic lamellae of centrosymmetric ferromagnetic alloys have recently been reported to host the biskyrmion spin texture, however this has been disputed as the misidentification of topologically trivial type-II magnetic bubbles. Here we demonstrate resonant soft x-ray holographic imaging of topological magnetic states in lamellae of the centrosymmetric alloy (Mn1-xNix)0:65Ga0:35 (x = 0:5), showing the presence of magnetic stripes evolving into single core magnetic bubbles. We observe rotation of the stripe phase via the nucleation and destruction of disclination defects. This indicates the system behaves as a conventional uniaxial ferromagnet. By utilizing the holography with extended reference by autocorrelation linear differential operator (HERALDO) method, we show tilted holographic images at 30 degrees incidence confirming the presence of type-II magnetic bubbles in this system. This study demonstrates the utility of x-ray imaging techniques in identifying the topology of localized structures in nanoscale magnetism. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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