Structural and magnetic properties of the interstitial carbide-hydride NdScSiC0.5H0.2
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MAHON, Tadhg | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GAUDIN, Etienne | |
| hal.structure.identifier | CRG & Grands instruments [NEEL - CRG] | |
| hal.structure.identifier | Institut Laue-Langevin [ILL] | |
| dc.contributor.author | NASSIF, V. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | TENCÉ, Sophie | |
| dc.date.issued | 2020-12 | |
| dc.identifier.issn | 0925-8388 | |
| dc.description.abstractEn | We report the synthesis of the first carbide-hydride phase obtained in the family of equiatomic intermetallics RTX (R = rare earth, T = transition metal, X = p-block element) by insertion of light elements. We prepared the NdScSiC0.5H0.2 compound by solid-gas reaction, by exposing the carbide NdScSiC0.5 to 40 bars of H2 gas at 450 °C. It crystallizes in the La2Fe2Se2O3-type structure with H and C atoms occupying Nd4 tetrahedral and Nd2Sc4 octahedral interstices, respectively. The H site is only partly filled owing to the presence of Nd–C covalent bonding that prevents the formation of Nd–H bonding through antagonist effect. The carbide-hydride was characterized through magnetic measurements, specific heat and powder neutron diffraction. Remarkably, hydrogenation of the carbide provokes a quite drastic effect on the magnetic properties by changing the ground state from a ferromagnetic (TC∼70 K) to an antiferromagnetic one (TN = 10 K). The magnetic structure of NdScSiC0.5H0.2 consists of double layers of ferromagnetic Nd moments aligned along the c-axis and coupled antiferromagnetically along this axis. This magnetic structure results in a field-induced metamagnetic behaviour as pointed out by magnetisation isotherms. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Carbide-hydride | |
| dc.title.en | Structural and magnetic properties of the interstitial carbide-hydride NdScSiC0.5H0.2 | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jallcom.2020.156105 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Alloys and Compounds | |
| bordeaux.page | 156105 | |
| bordeaux.volume | 844 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02937763 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02937763v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Alloys%20and%20Compounds&rft.date=2020-12&rft.volume=844&rft.spage=156105&rft.epage=156105&rft.eissn=0925-8388&rft.issn=0925-8388&rft.au=MAHON,%20Tadhg&GAUDIN,%20Etienne&NASSIF,%20V.&TENC%C3%89,%20Sophie&rft.genre=article |
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