ISIS Neutron and Muon Source Data Journal

Spin structure of magnetic exchange springs wound at remanence

Abstract: In a soft magnetic material the directions of the internal magnetic moments are easily changed by an external magnetic field while in a hard magnetic material they are not. In a magnetic exchange spring, which consists of a hard-soft-hard layer sandwich with perpendicular moments of the hard layers, the magnetic moments inside the soft layer are always wound up, like in a spring, even without an applied magnetic field. Going through the soft layer from one hard layer to the other, the directions of the moments in the soft layer will rotate from parallel to either of the hard layers. At Polref, we intend to measure the spring orientation of the moments in the soft layer. This can be done by measuring the intensity difference of reflected neutrons having up and down magnetic polarisation. This type of remanent exchange spring could be used for future memory devices.

Principal Investigator: Dr Andreas Frisk
Local Contact: Dr Christy Kinane
Experimenter: Dr Rob Hicken
Experimenter: Dr Nina-Juliane Steinke
Experimenter: Professor Gerrit van der Laan
Experimenter: Professor Thorsten Hesjedal
Experimenter: Mr Ryuji Fujita
Local Contact: Dr Andrew Caruana

DOI: 10.5286/ISIS.E.RB1920140

ISIS Experiment Number: RB1920140

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Andreas Frisk et al; (2020): Spin structure of magnetic exchange springs wound at remanence, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920140

Data is released under the CC-BY-4.0 license.