Journal article
Control of vortex chirality and polarity in magnetic nanodots with broken rotational symmetry
Physical review. B, v 84(1)
27 Jul 2011
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We explore size-dependent magnetic states of sub-100-nm Permalloy nanomagnets. The geometry is suitable for independent setting and readout of vortex polarity and chirality by applying in-plane magnetic fields only. Micromagnetic calculations show that in "Pac-Man"-like magnetic nanodots the relaxation channels to specific chirality and polarity states from uniform magnetization state are deterministic and are not influenced by the presence of moderate out-of-plane fields. The particular geometry opens a straight channel for magnetization relaxation toward a stable closure-domain vortex state with specific chirality and polarity. We show that in these nanomagnets the write process is simple and the signal is easily readable.
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Details
- Title
- Control of vortex chirality and polarity in magnetic nanodots with broken rotational symmetry
- Creators
- V. Cambel - Slovak Acad Sci, Inst Elect Engn, SK-84104 Bratislava, SlovakiaG. Karapetrov - Slovak Acad Sci, Inst Elect Engn, SK-84104 Bratislava, Slovakia
- Publication Details
- Physical review. B, v 84(1)
- Publisher
- Amer Physical Soc
- Number of pages
- 5
- Grant note
- ERDF; European Commission VVCE-0058-07 / APVV; Slovak Research and Development Agency
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000293180200012
- Scopus ID
- 2-s2.0-79961236266
- Other Identifier
- 991019168348204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter