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Resolving the spin polarization and magnetic domain wall width of (Nd,Dy)2Fe14B with spin-polarized scanning tunneling microscopy
- Source :
- Applied physics express. Letter, 14 (11), Art.Nr. 115504
- Publication Year :
- 2021
- Publisher :
- IOP Publishing, 2021.
-
Abstract
- The electronic structure and the domain wall width of industrial (Nd,Dy)$_{2}$Fe$_{14}$B hard magnets were investigated using low-temperature, spin-polarized scanning tunneling microscopy (STM) in ultra-high vacuum. In a first step, atomically clean and flat surfaces were prepared. The flat terraces were separated by monatomic steps. Surface termination was identified as the Fe c layer from atomically resolved STM imaging. The electronic density of states and its spin polarization agree well with ab initio predictions of the Fe c layer. High-resolution spin-polarized STM images allowed to finally resolve the domain wall width w of only 3.2 ± 0.4 nm.
- Subjects :
- Materials science
Magnetic domain
Spin polarization
Condensed matter physics
Physics
General Engineering
Ab initio
General Physics and Astronomy
Spin polarized scanning tunneling microscopy
Electronic structure
law.invention
Condensed Matter::Materials Science
Monatomic ion
Domain wall (magnetism)
law
ddc:530
Scanning tunneling microscope
Subjects
Details
- ISSN :
- 18820786 and 18820778
- Volume :
- 14
- Database :
- OpenAIRE
- Journal :
- Applied Physics Express
- Accession number :
- edsair.doi.dedup.....12e9408a089e100fd228c374a3483314