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Title: Record high magnetic ordering temperature in a lanthanide at extreme pressure

Abstract

Today's best permanent magnet materials, SmCo 5 and Nd 2Fe 14B, could likely be made signi fi cantly more powerful were it not necessary to dilute the strong magnetism of the rare earth ions (Sm, Nd) with the 3 d transition elements (Fe, Co). Since the rare-earth metals order magnetically at relatively low temperatures T o <= 292 K, transition elements must be added to bring T o to temperatures well above ambient. Under pressure T o (P) for the neighboring lanthanides Gd, Tb, and Dy follows a notably nonmonotonic, but nearly identical, dependence to similar to 60 GPa. At higher pressures, however, Tb and Dy exhibit highly anomalous behavior, T o for Dy soaring to temperatures well above ambient. In conclusion, we suggest that this anomalously high magnetic ordering temperature is an heretofore unrecognized feature of the Kondo lattice state.

Authors:
 [1];  [2];  [3];  [4]
  1. Washington Univ., St. Louis, MO (United States); Washington State Univ., Pullman, WA (United States)
  2. Washington Univ., St. Louis, MO (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Washington Univ., St. Louis, MO (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
University of Chicago, Institute for Genomics and Systems Biology; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1419857
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physics. Conference Series
Additional Journal Information:
Journal Volume: 950; Journal ID: ISSN 1742-6588
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Lim, J., Fabbris, G., Haskel, D., and Schilling, J. S. Record high magnetic ordering temperature in a lanthanide at extreme pressure. United States: N. p., 2017. Web. doi:10.1088/1742-6596/950/4/042025.
Lim, J., Fabbris, G., Haskel, D., & Schilling, J. S. Record high magnetic ordering temperature in a lanthanide at extreme pressure. United States. doi:10.1088/1742-6596/950/4/042025.
Lim, J., Fabbris, G., Haskel, D., and Schilling, J. S. Tue . "Record high magnetic ordering temperature in a lanthanide at extreme pressure". United States. doi:10.1088/1742-6596/950/4/042025. https://www.osti.gov/servlets/purl/1419857.
@article{osti_1419857,
title = {Record high magnetic ordering temperature in a lanthanide at extreme pressure},
author = {Lim, J. and Fabbris, G. and Haskel, D. and Schilling, J. S.},
abstractNote = {Today's best permanent magnet materials, SmCo5 and Nd2Fe14B, could likely be made signi fi cantly more powerful were it not necessary to dilute the strong magnetism of the rare earth ions (Sm, Nd) with the 3 d transition elements (Fe, Co). Since the rare-earth metals order magnetically at relatively low temperatures T o <= 292 K, transition elements must be added to bring T o to temperatures well above ambient. Under pressure T o (P) for the neighboring lanthanides Gd, Tb, and Dy follows a notably nonmonotonic, but nearly identical, dependence to similar to 60 GPa. At higher pressures, however, Tb and Dy exhibit highly anomalous behavior, T o for Dy soaring to temperatures well above ambient. In conclusion, we suggest that this anomalously high magnetic ordering temperature is an heretofore unrecognized feature of the Kondo lattice state.},
doi = {10.1088/1742-6596/950/4/042025},
journal = {Journal of Physics. Conference Series},
number = ,
volume = 950,
place = {United States},
year = {Tue Nov 07 00:00:00 EST 2017},
month = {Tue Nov 07 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
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