Magnetic phase separation in the EuPdSn2 ground state

Alberto Martinelli; Dominic Ryan; Julian Sereni; Clemens Ritter; Andreas Leineweber; Ivan Čurlík; Riccardo Freccero; Mauro Giovannini

doi:10.1039/D3TC00764B

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Magnetic phase separation in the EuPdSn₂ ground state

Alberto Martinelli,

*^a Dominic Ryan,^b Julian Sereni,^c Clemens Ritter,^d Andreas Leineweber,

^e Ivan Čurlík,^f Riccardo Freccero

^g and Mauro Giovannini

Author affiliations

* Corresponding authors

^a SPIN-CNR, Corso F.M. Perrone 24, 16152 Genova, Italy
E-mail: alberto.martinelli@spin.cnr.it

^b Physics Department and the Centre for the Physics of Materials, McGill University, 3600 University St., Montreal, Quebec, Canada

^c Department of Physics, CAB-CNEA, CONICET, 8400 San Carlos de Bariloche, Argentina

^d Institut Laue – Langevin, 71 Avenue des Martyrs, 38042 Grenoble Cedex 9, France

^e Institute of Materials Science, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 5, D-09599 Freiberg, Germany

^f Faculty of Humanities and Natural Sciences, University of Prešov, 17. novembra 1, Prešov, Slovakia

^g Department of Chemistry and Industrial Chemistry, University of Genova, Via Dodecaneso 31, 16146 Genova, Italy

Abstract

The chemical bonding, structural and magnetic properties of EuPdSn₂ have been investigated by DFT, synchrotron X-ray and neutron powder diffraction and ¹⁵¹Eu Mössbauer spectroscopy. As a result, no structural transition is observed in the thermal range of 5–290 K, whereas ferromagnetic and antiferromagnetic orderings are found to coexist below 12 K and compete in the ground state. This magnetic phase separation is likely triggered by the minimization of the global energy resulting from the coexistence of the different magnetic configurations. Chemical bonding analysis in position space reveals the presence of heteroatomic 4a- and 5a-bonds, involving each species, and two-atomic Eu–Pd polar covalent interactions building up graphite-like distorted honeycomb layers.

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DOI: https://doi.org/10.1039/D3TC00764B
Article type: Paper
Submitted: 02 Mar 2023
Accepted: 08 May 2023
First published: 09 May 2023
This article is Open Access

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J. Mater. Chem. C, 2023,11, 7641-7653

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Magnetic phase separation in the EuPdSn₂ ground state

A. Martinelli, D. Ryan, J. Sereni, C. Ritter, A. Leineweber, I. Čurlík, R. Freccero and M. Giovannini, J. Mater. Chem. C, 2023, 11, 7641 DOI: 10.1039/D3TC00764B

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Journal of Materials Chemistry C

Magnetic phase separation in the EuPdSn₂ ground state

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