Magnetic order in superconducting Tb, Dy, and Er
- 1 May 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 23 (9), 4455-4462
- https://doi.org/10.1103/physrevb.23.4455
Abstract
Dy and Tb are superconducting below K, and Er below K. Neutron diffraction has been used to study the development of magnetic order in these materials at temperatures less than . In zero applied magnetic field, the Dy and Tb order antiferromagnetically, the magnetic order coexisting with the superconductivity. The Er sample showed no long-range magnetic order when initially cooled down in zero applied magnetic field. After a magnetic field was applied and reduced to near zero, the sample showed coexistent antiferromagnetic order below K. Magnetization measurements on Dy and Tb at temperatures below suggest the development of ferromagnetic order as the applied field increases. In the case of Tb , the neutron data show ferromagnetic order developing for where is the upper critical field for superconductivity. For Dy ferromagnetic order develops for much less than . Both ferromagnetic and antiferromagnetic order occur with the sample in the superconducting state.
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