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Title: Tuning the magnetic anisotropy in CeRhIn 5 via Gd substitution

Abstract

In strongly correlated materials, the presence of defects may fundamentally affect both macroscopic and microscopic properties of the system. Here we investigate the effect of Gd substitution in the Kondo antiferromagnet CeRhIn5. At a concentration of only 11% Gd, the magnetic anisotropy of CeRhIn5 is drastically reduced at high temperatures, whereas its antiferromagnetic transition, TCeN = 3.8 K, is linearly suppressed with Gd at low temperatures. Here, the extrapolation of TCeN to zero temperature occurs at a critical concentration of xc ~ 0.63, which is above the two-dimensional percolation limit found in Ce1–xLaxRhIn5 (xc ~ 0.4), but very close to the three-dimensional percolation limit found in Gd1–xLaxRhIn5 and Ce1–xLaxIn3 (xc ~ 0.65), in agreement with the more isotropic magnetic response.

Authors:
 [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1481972
Alternate Identifier(s):
OSTI ID: 1414503
Report Number(s):
LA-UR-17-29039
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 22; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Material Science

Citation Formats

Rosa, P. F. S., Faust, L. M., Bauer, E. D., and Thompson, J. D. Tuning the magnetic anisotropy in CeRhIn5 via Gd substitution. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.96.220409.
Rosa, P. F. S., Faust, L. M., Bauer, E. D., & Thompson, J. D. Tuning the magnetic anisotropy in CeRhIn5 via Gd substitution. United States. doi:10.1103/PhysRevB.96.220409.
Rosa, P. F. S., Faust, L. M., Bauer, E. D., and Thompson, J. D. Thu . "Tuning the magnetic anisotropy in CeRhIn5 via Gd substitution". United States. doi:10.1103/PhysRevB.96.220409. https://www.osti.gov/servlets/purl/1481972.
@article{osti_1481972,
title = {Tuning the magnetic anisotropy in CeRhIn5 via Gd substitution},
author = {Rosa, P. F. S. and Faust, L. M. and Bauer, E. D. and Thompson, J. D.},
abstractNote = {In strongly correlated materials, the presence of defects may fundamentally affect both macroscopic and microscopic properties of the system. Here we investigate the effect of Gd substitution in the Kondo antiferromagnet CeRhIn5. At a concentration of only 11% Gd, the magnetic anisotropy of CeRhIn5 is drastically reduced at high temperatures, whereas its antiferromagnetic transition, TCeN = 3.8 K, is linearly suppressed with Gd at low temperatures. Here, the extrapolation of TCeN to zero temperature occurs at a critical concentration of xc ~ 0.63, which is above the two-dimensional percolation limit found in Ce1–xLaxRhIn5 (xc ~ 0.4), but very close to the three-dimensional percolation limit found in Gd1–xLaxRhIn5 and Ce1–xLaxIn3 (xc ~ 0.65), in agreement with the more isotropic magnetic response.},
doi = {10.1103/PhysRevB.96.220409},
journal = {Physical Review B},
number = 22,
volume = 96,
place = {United States},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

FIG. 1 FIG. 1: Tetragonal lattice parameters as a function of the actual concentration measured by EDS, xEDS, along the series Ce1-xGdxRhIn5.

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