Publication Date

4-12-2019

Department

Ames Laboratory; Materials Science and Engineering

Campus Units

Ames Laboratory, Materials Science and Engineering

OSTI ID+

1509485

Report Number

IS-J 9894

DOI

10.1088/1361-648X/ab1192

Journal Title

Journal of Physics: Condensed Matter

Volume Number

31

Issue Number

26

First Page

265801

Abstract

A systematic study of the physical properties and microscopic magnetism of Nd7Pd3 compound, which in the paramagnetic state crystallizes in the non-centrosymmetric hexagonal Th7Fe3-type structure (hP20–P63 mc; with a  =  10.1367(1) Å and c  =  6.3847(1) Å at 300 K), confirms multiple magnetic ordering transitions that occur upon cooling. Antiferromagnetic transition is observed at T N  =  37 K, which is followed by ferromagnetic transformation at T C  =  33 K. The first-order magnetic transition at T C is magnetoelastic: it involves a change of crystal symmetry from P63 mc to Cmc21 and leads to anisotropic changes of the unit cell parameters. While the antiferromagnetic structure is symmetry allowed in P63 mc, the ferromagnetic structure with magnetic moments along the a-direction of the original hexagonal unit cell induces the first order transition to Cmc21. Density functional theory calculations confirm the experimentally observed ground state with the a-axis as the easy magnetization direction.

DOE Contract Number(s)

AC02-07CH11358; 11104247; 11304279; 51271149; 51671160; LY18E010007

Language

en

Department of Energy Subject Categories

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Publisher

Iowa State University Digital Repository, Ames IA (United States)

IS-J 9894 SI.pdf (45 kB)
Supplementary Information

Available for download on Sunday, April 12, 2020

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