Campus Units

Physics and Astronomy, Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

8-1-2017

Journal or Book Title

Physical Review B

Volume

96

Issue

5

First Page

054435

DOI

10.1103/PhysRevB.96.054435

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|/TN=0.25, which can be explained by mean field theory within a two-sublattice model. 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.

Comments

This article is published as Manni, S., Sergey L. Bud'ko, and Paul C. Canfield. "GdPtPb: A noncollinear antiferromagnet with distorted kagome lattice." Physical Review B 96, no. 5 (2017): 054435. DOI: 10.1103/PhysRevB.96.054435. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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