High precision measurements of the spin wave dispersion in Yttrium Iron Garnet


Yttrium Iron Garnet (YIG) is a material with extremely wide ranging applications, having the narrowest ferromagnetic resonance linewidth of any known material. Despite decades of experiments on this material, data relating to its full magnon spectrum is sparse. The spectrum is known to contain 20 branches, but the most thorough work to date relies upon a 3-parameter hamiltonian derived from fitting just 3 (the only 3 that were observed in what is still the only neutron spectroscopic measurement on this material). Increasing interest in YIG for applications in magnonics (the magnon equivalent of electronics) necessitates a direct measurement of the optical magnon modes. Following RB1520403 we have sourced larger, purer crystals and we propose to continue the work we have started and produce the definitive data set on this material along with the most thorough analysis possible.

DOI https://doi.org/10.5286/ISIS.E.73945142
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/73945142
Creator Dr Russell Ewings; Dr Alexy Karenowska; Dr Andrew Princep; Professor Andrew Boothroyd
Publisher ISIS Neutron and Muon Source
Publication Year 2019
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Resource Type Dataset
Discipline Natural Sciences; Physics
Temporal Coverage Begin 2016-03-14T08:00:00Z
Temporal Coverage End 2016-03-15T08:00:00Z