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Title: Magnetic ordering at anomalously high temperatures in Dy at extreme pressures

Abstract

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 T-o and spin-disorder resistance R-sd of Dy, as well as the superconducting pair-breaking effect Delta T-c in Y(1 at.% Dy), are found to track each other in a highly nonmonotonic fashion as a function of pressure. Above 73 GPa, the critical pressure for a 6% volume collapse in Dy, all three quantities increase sharply (dT(o)/dP similar or equal to 5.3 K/GPa), T-o appearing to rise above ambient temperature for P > 107 GPa. In contrast, To and Delta T-c for Gd and Y(0.5 at.% Gd), respectively, show no such sharp increase with pressure (dT(o)/dP similar or equal to 0.73K/GPa). Taken together, these results suggest that extreme pressure transports Dy into an unconventional magnetic state with an anomalously high magnetic ordering temperature.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1391917
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 91; Journal Issue: 4
Country of Publication:
United States
Language:
English

Citation Formats

Lim, J., Fabbris, G., Haskel, D., and Schilling, J. S.. Magnetic ordering at anomalously high temperatures in Dy at extreme pressures. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.91.045116.
Lim, J., Fabbris, G., Haskel, D., & Schilling, J. S.. Magnetic ordering at anomalously high temperatures in Dy at extreme pressures. United States. doi:10.1103/PhysRevB.91.045116.
Lim, J., Fabbris, G., Haskel, D., and Schilling, J. S.. Thu . "Magnetic ordering at anomalously high temperatures in Dy at extreme pressures". United States. doi:10.1103/PhysRevB.91.045116.
@article{osti_1391917,
title = {Magnetic ordering at anomalously high temperatures in Dy at extreme pressures},
author = {Lim, J. and Fabbris, G. and Haskel, D. and Schilling, J. S.},
abstractNote = {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 T-o and spin-disorder resistance R-sd of Dy, as well as the superconducting pair-breaking effect Delta T-c in Y(1 at.% Dy), are found to track each other in a highly nonmonotonic fashion as a function of pressure. Above 73 GPa, the critical pressure for a 6% volume collapse in Dy, all three quantities increase sharply (dT(o)/dP similar or equal to 5.3 K/GPa), T-o appearing to rise above ambient temperature for P > 107 GPa. In contrast, To and Delta T-c for Gd and Y(0.5 at.% Gd), respectively, show no such sharp increase with pressure (dT(o)/dP similar or equal to 0.73K/GPa). Taken together, these results suggest that extreme pressure transports Dy into an unconventional magnetic state with an anomalously high magnetic ordering temperature.},
doi = {10.1103/PhysRevB.91.045116},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 4,
volume = 91,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}