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Structure and hydrogenation study of nickel substituted NdCo3NiB
| hal.structure.identifier | Ilika Technologies Ltd. | |
| dc.contributor.author | SOULIÉ, Jean-Philippe | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | PENIN, Nicolas | |
| hal.structure.identifier | Laboratory of Crystallography | |
| dc.contributor.author | YVON, Klaus | |
| dc.date.issued | 2012 | |
| dc.identifier.issn | 0925-8388 | |
| dc.description.abstractEn | In an attempt to observe hydrogen (deuterium) induced atomic ordering of transition (T) metals in AB5-type derivative structures neutron diffraction and hydrogen cycling experiments were performed on a nickelsubstituted boride sample of composition NdCo3NiB. While uncycled NdCo3NiB crystallizes with the centrosymmetric CeCo4B-type structure (space group P6/mmm), hydrogenation (deuteration) and cycling of NdCo3NiB at 373 K between 0 and 60 bar hydrogen (deuterium) atmosphere induces a symmetry decrease to non-centrosymmetric space group P6mm. Evidence for partial cobalt/nickel ordering is found in pristine NdCo3NiB but not in its deuteride NdCo3NiBDx. Compared to boron free AB5-type compounds deuterium occupies only those interstices that have no boron atom in their coordination sphere. These findings are consistent with repulsive B-D interactions. At 303 K the hydrogen equilibrium plateau pressure of the NdCo3NiB-H system is about 2 bar, and the hydrogen content at 10 bar is about 3.1 H atoms per formula unit. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Rare earth alloys | |
| dc.subject.en | Hydrogen storage materials | |
| dc.subject.en | Crystal structure | |
| dc.subject.en | Neutron diffraction | |
| dc.title.en | Structure and hydrogenation study of nickel substituted NdCo3NiB | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jallcom.2012.02.107 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Alloys and Compounds | |
| bordeaux.page | 63-67 | |
| bordeaux.volume | 526 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00688060 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00688060v1 | |
| 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=2012&rft.volume=526&rft.spage=63-67&rft.epage=63-67&rft.eissn=0925-8388&rft.issn=0925-8388&rft.au=SOULI%C3%89,%20Jean-Philippe&PENIN,%20Nicolas&YVON,%20Klaus&rft.genre=article |
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