Micromagnetics of magnetic chemical modulations in soft-magnetic cylindrical nanowires
- 1. Univ. Grenoble Alpes, CNRS, CEA, SPINTEC, Grenoble INP, 38000 Grenoble, France
- 2. Alba Synchrotron Light Facility, CELLS, 08290 Cerdanyola del Vallès, Barcelona, Spain
- 3. Dpto. de Física de Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain
- 4. Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, FR-91192 Gif-sur-Yvette Cedex, France
- 5. Centre d'Elaboration de Materiaux et d'Etudes Structurales, 31055, Toulouse, France.
- 6. Friedrich-Alexander Univ.\ Erlangen-N\"{u}rnberg, Inorganic Chemistry, Erlangen, Germany
- 7. Univ. Grenoble Alpes, CNRS, Institut Néel, 38000 Grenoble, France.
- 8. Univ. Grenoble Alpes, CNRS, Institut Néel, 38000 Grenoble, France
Description
Abstract:
We analyze the micromagnetics of short longitudinal modulations of a high magnetization material in cylindrical nanowires made of a soft-magnetic material of lower magnetization such as Permalloy, combining magnetic microscopy, analytical modeling and micromagnetic simulations. The mismatch of magnetization induces curling of magnetization around the axis in the modulations, in an attempt to screen the interfacial magnetic charges. The curling angle increases with modulation length, until a plateau is reached with nearly full charge screening for a specific length scale, larger than the dipolar exchange length of any of the two materials. The curling circulation can be switched by the Œrsted field arising from a charge current with typical magnitude 1012A/m2.
Files
Fig1a-AFM-8x1.5um.jpg
Files
(140.4 MB)
| Name | Size | Download all |
|---|---|---|
|
md5:cdb0907e9c76162a90acc3b341379c00
|
30.9 MB | Download |
|
md5:e1972e0b0e0c94828f30e32a411abda0
|
67.7 MB | Download |
|
md5:c7e8e657583f4184a768e2f2b5234ef6
|
79.4 kB | Preview Download |
|
md5:1b7907ae25d291dfc178c7209f6d7042
|
10.8 MB | Download |
|
md5:59a507561aa9125af7f0423e8dbca828
|
153.6 kB | Preview Download |
|
md5:4929ef39bc33dbef2cc9edeaa9714b10
|
10.8 MB | Download |
|
md5:f8d7905ca9d4e8179dfb0c4830f72d00
|
869.6 kB | Preview Download |
|
md5:d166b82ff2116bf58274392708a903dc
|
4.2 MB | Preview Download |
|
md5:85248caa255cc6f40c1968a141d7ef79
|
518.6 kB | Preview Download |
|
md5:8c1da3bcc4712d15bcfd53b34c770361
|
2.1 MB | Preview Download |
|
md5:5144a07ea5d1e32e1a240f035296ab5d
|
4.0 MB | Preview Download |
|
md5:130a2f61cff07d3f258d4f9083a113bd
|
4.0 MB | Preview Download |
|
md5:d108027e35d1f49d9f8c2937abe6db2f
|
8.6 kB | Download |
|
md5:7f49390ef8ba653a5081ea91ad4faa0c
|
682.8 kB | Download |
|
md5:279f5d26d0a9b3753bf22e75ac07ec49
|
1.2 MB | Download |
|
md5:d35a0641b53b5b5ae070a33dba8461b3
|
693.4 kB | Download |
|
md5:5715e3f18f897d8c08778c8e6d05bb6b
|
355.6 kB | Download |
|
md5:ca0a3f5b6503ac9d86b34feac2e2b017
|
867.6 kB | Download |
|
md5:2d35e8248c2f69c26dfbef11013fb4bc
|
4.8 kB | Preview Download |
|
md5:498c54730c9e1e05e7f420255e9cc75c
|
14.0 kB | Download |
|
md5:3ff4dc5b2559220556210290c4bf8246
|
60.4 kB | Download |
|
md5:30c06277ddbfe1205b47efd74dfa6fe6
|
8.7 kB | Download |
|
md5:ac59fbef3d19cf0ef8bed871ad25ee01
|
160.4 kB | Preview Download |
|
md5:c5789ca5e8a9d439bd4d7dbd45917cfd
|
144.4 kB | Preview Download |
|
md5:e64f628eb6f93334d1a6da398c0e0309
|
75.6 kB | Preview Download |
