ISIS Neutron and Muon Source Data Journal

Internal stresses in superconducting bulk magnets studied by in situ neutron diffraction

Abstract: Bulk high temperature superconductors are useful for permanent magnet applications because they can generate much stronger magnetic fields than ferromagnets and are more compact than wound magnets. These properties can be exploited in electrical machines with high power-to-weight ratio for the aerospace industry and in biomedical applications such as MRI and novel magnetic drug targeting therapies. When magnetised, these ceramics are subjected to considerable internal tensile stresses. Their poor mechanical properties in tension result in the magnets failing as a result of cracking before their maximum field is reached. We will measure the elastic strains in the different phases of superconducting bulk magnets during and after energisation in an external magnetic field using in-situ neutron diffraction and will correlate this with numerical models to determine the onset of cracking.

Principal Investigator: Professor Susannah Speller
Experimenter: Dr Tom Bradshaw
Local Contact: Dr Joe Kelleher
Experimenter: Dr Mark Ainslie
Experimenter: Professor James Marrow
Experimenter: Dr John Durrell
Experimenter: Miss Jasmin Congreve
Experimenter: Dr Dominic Moseley
Experimenter: Dr Tayebeh Mousavi
Experimenter: Dr Sangeeta Santra

DOI: 10.5286/ISIS.E.RB1910139

ISIS Experiment Number: RB1910139

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:
Professor Susannah Speller et al; (2019): Internal stresses in superconducting bulk magnets studied by in situ neutron diffraction, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1910139

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