ISIS Neutron and Muon Source Data Journal

Using neutron reflectometry to understand enhanced dynamic linewidth in a magnetic trilayer device (continuation)

Abstract: We have studied magnetic damping of CoFe/Ag/CoFe multilayer films using ferromagnetic resonance spectroscopy. There is an anomalous linewidth enhancement, which oscillates with a period of around 1 nm as the Ag thickness is increased. Theoretical studies predict dynamic exchange coupling across non-magnetic spacers to affect the resonance linewidth; the enhanced damping in CoFe/Ag/CoFe may rely on the interlayer coupling which may be ferromagnetic or antiferromagnetic due to the well-known Ruderman-Kittel-Kasuya-Yosida (RKKY) mechanism. Our previous experiment found uniaxial magnetic anisotropy (UMA) may also play a role. The aim of this experiment is to determine the UMA and RKKY coupling strengths from depth-resolved vector magnetometry using polarised neutron reflectometry with polarisation analysis, to clarify interpretation of the anomalous linewidth behaviour in CoFe/Ag/CoFe.

Local Contact: Dr Andrew Caruana
Experimenter: Dr Raymond Fan
Experimenter: Dr Paul Steadman
Experimenter: Mr kalel Alsaeed
Experimenter: Dr Aidan Hindmarch
Experimenter: Dr Kiranjot Kiranjot
Experimenter: Dr David Burn

DOI: 10.5286/ISIS.E.RB2320101

ISIS Experiment Number: RB2320101

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 Andrew Caruana et al; (2023): Using neutron reflectometry to understand enhanced dynamic linewidth in a magnetic trilayer device (continuation), STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2320101

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