Abstract
Applications of sensitive vibrating reed magnetometry to a variety of superconducting and magnetic materials are reviewed. The advantages of conducting vibrating reed studies of small single crystals, ceramics, thin films and multilayers with high anisotropy, composition gradients, strain and nonlinear magnetic response are documented. The equilibrium and dynamic properties of magnetic flux in superconductors, and coexistence of magnetic and superconducting states are emphasised. Vibrating reed experiments on Nb, NbSe2, (Ba0.6K0.4)BiO3, HoNi2B2C, {Nb(x)/Ni(y)}Z multilayer films, and κ-(ET)2Cu{N(CN)2}Br have revealed subtle, exotic superconducting behaviours that remain unexplained. Future prospects for vibrating reed measurements of ferromagnetic thin films with patterned nanostructures are considered.
| Original language | English |
|---|---|
| Pages (from-to) | 1367-1413 |
| Number of pages | 47 |
| Journal | Philosophical Magazine |
| Volume | 100 |
| Issue number | 10 |
| DOIs | |
| State | Published - May 18 2020 |
Bibliographical note
Publisher Copyright:© 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.
Funding
This work was supported by U.S. National Science Foundation, Division of Materials Research Grant No DMR-1506979]. Research at the University of Kentucky was supported by U. S. National Science Foundation Grant No. DMR-1506979. LED would like to thank Prof. J. W. Brill for numerous conversations on vibrating reed techniques, including collaborative endeavours over many years, and W. Fuqua PE for technical assistance in conducting vibrating reed experiments. We thank Dr. Wentao Xu for providing unpublished, atomic-scale TEM images of Nb/Ni ML samples fabricated by Dr. Javier Villegas of the Universidad Complutense de Madrid (now at CNRS-Thales, France). We thank Dr. Amish G. Joshi (National Physical Laboratory, Delhi) for contributing unpublished VR data for Nb/Ni ML. Research at the University of Kentucky was supported by U. S. National Science Foundation Grant No. DMR-1506979. LED would like to thank Prof. J. W. Brill for numerous conversations on vibrating reed techniques, including collaborative endeavours over many years, and W. Fuqua PE for technical assistance in conducting vibrating reed experiments. We thank Dr. Wentao Xu for providing unpublished, atomic-scale TEM images of Nb/Ni ML samples fabricated by Dr. Javier Villegas of the Universidad Complutense de Madrid (now at CNRS-Thales, France). We thank Dr. Amish G. Joshi (National Physical Laboratory, Delhi) for contributing unpublished VR data for Nb/Ni ML.
| Funders | Funder number |
|---|---|
| CNRS-Thales | |
| U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China | |
| Division of Materials Research | DMR-1506979 |
| Division of Materials Research | |
| Universidad Complutense de Madrid | |
| National Physical Laboratory |
Keywords
- Measurements of magnetic anisotropy
- magnetic measurements of ferromagnets
- magnetic measurements of superconductors
- magnetic measurements of thin-films and nanoscale materials
- vibrating reed magnetometry
ASJC Scopus subject areas
- Condensed Matter Physics