Magnetic ordering at anomalously high temperatures in Dy at extreme pressures
- Washington Univ., St. Louis, MO (United States)
- Washington Univ., St. Louis, MO (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
In an attempt to destabilize the magnetic state of the heavy lanthanide Dy, extreme pressures were applied in an electrical resistivity measurement to 157 GPa over the temperature range 1.3 - 295 K. The magnetic ordering temperature To and spin-disorder resistance Rsd of Dy, as well as the superconducting pair-breaking effect ΔTc in Y(1 at.% Dy), are found to track each other in a highly non-monotonic fashion as a function of pressure. Above 73 GPa, the critical pressure for a 6% volume collapse in Dy, all three quantities increase sharply (dTo=dP≃5.3 K/GPa), To appearing to rise above ambient temperature for P > 107 GPa. In contrast, To and ΔTc for Gd and Y(0.5 at.% Gd), respectively, show no such sharp increase with pressure (dTo=dP≃ 0.73 K/GPa). Altogether, these results suggest that extreme pressure transports Dy into an unconventional magnetic state with an anomalously high magnetic ordering temperature.
- Research Organization:
- Carnegie Institution of Washington, Washington, D.C. (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- NA0002006; FC52-08NA28554; AC02-06CH11357
- OSTI ID:
- 1335454
- Alternate ID(s):
- OSTI ID: 1180135
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 4; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
High-pressure structural systematics in samarium up to 222 GPa
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journal | May 2020 |
Pressure-Induced Superconductivity in Elemental Ytterbium Metal
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journal | July 2018 |
High-pressure structural systematics in samarium up to 222 GPa
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text | January 2020 |
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