| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Meven, Martin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Topological aspects of multi-k antiferromagnetism in cubic rare-earth compoundscitations
- 2024Topological aspects of multi-$bm{k}$ antiferromagnetism in cubic rare-earth compoundscitations
- 2024Long-range magnetic order in CePdAl3 enabled by orthorhombic deformation
- 2023Magnetic structure of the two-dimensional XY antiferromagnet Sr 2 CoSi 2 O 7 studied using single-crystal neutron diffractioncitations
- 2023Magnetic structure of the two-dimensional XY antiferromagnet Sr2CoSi2O7 studied using single-crystal neutron diffractioncitations
- 2021Infrared furnace for in situ neutron single-crystal diffraction studies in controlled gas atmospheres at high temperaturescitations
- 2021Interdependent scaling of long-range oxygen and magnetic ordering in nonstoichiometric Nd$_2$NiO$_{4.10}$citations
- 2019Structural disorder and magnetic correlations driven by oxygen doping in Nd_{2}NiO_{4+δ} ( δ ∼ 0.11 )citations
- 2019H-bonding in lazulite: a single-crystal neutron diffraction study at 298 and 3 K
- 2019Unambiguous determination of the commensurate antiferromagnetic structure of HoNi 2 B 2 C in the superconducting ground statecitations
- 2018(Nd/Pr)2NiO4+δ: reaction intermediates and redox behavior explored by in situ neutron powder diffraction during electrochemical oxygen intercalationcitations
- 2018Proton disorder in a short intramolecular hydrogen bond investigated by single-crystal neutron diffraction at 2.5 and 170 Kcitations
- 2018Crystal Structure of Magnetoelectric Ba$_2$MnGe$_2$O$_7$ at Room and Low Temperatures by Neutron Diffractioncitations
- 2016Single-crystal neutron diffraction on γ-LiAlO2: structure determination and estimation of lithium diffusion pathway
- 2016The low-temperature crystal structure of the multiferroic melilite Ca2CoSi2O7citations
- 2016H-bonding scheme and cation partitioning in axinite: a single-crystal neutron diffraction and Mössbauer spectroscopic studycitations
- 2015Solid-state reactivity explored in situ by synchrotron radiation on single crystals: from SrFeO 2.5 to SrFeO 3 via electrochemical oxygen intercalationcitations
- 2015Solid-state reactivity explored in situ by synchrotron radiation on single crystals: from SrFeO2.5 to SrFeO3 via electrochemical oxygen intercalationcitations
- 2015Single-crystal neutron diffraction and Mössbauer spectroscopic study of hureaulite, (Mn,Fe)$_5$(PO$_4$)$_2$(HPO$_4$)$_2$(H$_2$O)$_4$citations
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article
Long-range magnetic order in CePdAl3 enabled by orthorhombic deformation
Abstract
<jats:p>We investigate the effect of structural deformation on the magnetic properties of orthorhombic <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:msub><a:mi>CePdAl</a:mi><a:mn>3</a:mn></a:msub></a:math> in relation to its tetragonal polymorph. Utilizing x-ray and neutron diffraction, we establish that the crystal structure has the <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mrow><b:mi>C</b:mi><b:mi>m</b:mi><b:mi>c</b:mi><b:mi>m</b:mi></b:mrow></b:math> space-group symmetry and exhibits pseudotetragonal twinning. According to density functional calculations, the tetragonal-orthorhombic deformation mechanism has its grounds in the relatively small free enthalpy difference between the polymorphs, allowing either phase to be quenched, and fully accounts for the twinned microstructure of the orthorhombic phase. Neutron diffraction measurements show that orthorhombic <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"><c:msub><c:mi>CePdAl</c:mi><c:mn>3</c:mn></c:msub></c:math> establishes long-range magnetic order below <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"><d:mrow><d:msub><d:mi>T</d:mi><d:mi mathvariant="normal">N</d:mi></d:msub><d:mo>=</d:mo><d:mn>5.29</d:mn><d:mspace width="0.16em"/><d:mrow><d:mo>(</d:mo><d:mn>5</d:mn><d:mo>)</d:mo></d:mrow></d:mrow></d:math> K characterized by a collinear, antiferromagnetic arrangement of magnetic moments. Magnetic anisotropies of orthorhombic <g:math xmlns:g="http://www.w3.org/1998/Math/MathML"><g:msub><g:mi>CePdAl</g:mi><g:mn>3</g:mn></g:msub></g:math> arise from strong spin-orbit coupling as evidenced by the crystal-field splitting of the <h:math xmlns:h="http://www.w3.org/1998/Math/MathML"><h:mrow><h:mn>4</h:mn><h:mi>f</h:mi></h:mrow></h:math> multiplet, fully characterised with neutron spectroscopy. We discuss the potential mechanism of frustration posed by antiferromagnetic interactions between nearest neighbors in the tetragonal phase, which hinders the formation of long-range magnetic order in tetragonal <i:math xmlns:i="http://www.w3.org/1998/Math/MathML"><i:msub><i:mi>CePdAl</i:mi><i:mn>3</i:mn></i:msub></i:math>. We propose that orthorhombic deformation releases the frustration and allows for long-range magnetic order.</jats:p><jats:sec><jats:title/><jats:supplementary-material><jats:permissions><jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement><jats:copyright-year>2024</jats:copyright-year></jats:permissions></jats:supplementary-material></jats:sec>