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Title: GdPtPb: A noncollinear antiferromagnet with distorted kagome lattice

Abstract

In the spirit of searching for Gd-based, frustrated, rare earth magnets, we have found antiferomagnetism (AF) in GdPtPb, which crystallizes in the ZrNiAl-type structure that has a distorted kagome lattice of Gd triangles. Single crystals were grown and investigated using structural, magnetic, transport, and thermodynamic measurements. GdPtPb orders antiferromagnetically at 15.5 K, arguably with a planar, noncollinear structure. The high temperature magnetic susceptibility data reveal an “anti-frustration” behavior having a frustration parameter, |f| = |Θ|/T N = 0.25, which can be explained by mean field theory within a two-sublattice model. Here, the study of the magnetic phase diagram down to T = 1.8K reveals a change of magnetic structure through a metamagnetic transition at around 20 kOe and the disappearance of the AF ordering near 140 kOe. In total, our work indicates that GdPtPb can serve as an example of a planar, noncollinear AF with a distorted kagome magnetic sublattice.

Authors:
 [1];  [1];  [1]
  1. Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1396272
Alternate Identifier(s):
OSTI ID: 1376926
Report Number(s):
IS-J-9430
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1702844
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 5; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Manni, S., Bud'ko, Sergey L., and Canfield, Paul C. GdPtPb: A noncollinear antiferromagnet with distorted kagome lattice. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.96.054435.
Manni, S., Bud'ko, Sergey L., & Canfield, Paul C. GdPtPb: A noncollinear antiferromagnet with distorted kagome lattice. United States. doi:10.1103/PhysRevB.96.054435.
Manni, S., Bud'ko, Sergey L., and Canfield, Paul C. Thu . "GdPtPb: A noncollinear antiferromagnet with distorted kagome lattice". United States. doi:10.1103/PhysRevB.96.054435. https://www.osti.gov/servlets/purl/1396272.
@article{osti_1396272,
title = {GdPtPb: A noncollinear antiferromagnet with distorted kagome lattice},
author = {Manni, S. and Bud'ko, Sergey L. and Canfield, Paul C.},
abstractNote = {In the spirit of searching for Gd-based, frustrated, rare earth magnets, we have found antiferomagnetism (AF) in GdPtPb, which crystallizes in the ZrNiAl-type structure that has a distorted kagome lattice of Gd triangles. Single crystals were grown and investigated using structural, magnetic, transport, and thermodynamic measurements. GdPtPb orders antiferromagnetically at 15.5 K, arguably with a planar, noncollinear structure. The high temperature magnetic susceptibility data reveal an “anti-frustration” behavior having a frustration parameter, |f| = |Θ|/TN = 0.25, which can be explained by mean field theory within a two-sublattice model. Here, the study of the magnetic phase diagram down to T = 1.8K reveals a change of magnetic structure through a metamagnetic transition at around 20 kOe and the disappearance of the AF ordering near 140 kOe. In total, our work indicates that GdPtPb can serve as an example of a planar, noncollinear AF with a distorted kagome magnetic sublattice.},
doi = {10.1103/PhysRevB.96.054435},
journal = {Physical Review B},
number = 5,
volume = 96,
place = {United States},
year = {2017},
month = {8}
}

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