Drastic change of the ferromagnetic properties of the ternary germanide GdTiGe through hydrogen insertion
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GAUDIN, Etienne | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MATAR, Samir F. | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | PÖTTGEN, Rainer | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | EUL, Matthias | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHEVALIER, Bernard | |
| dc.date.issued | 2011 | |
| dc.identifier.issn | 0020-1669 | |
| dc.description.abstractEn | Hydrogen absorption of the CeFeSi- and CeScSi-type forms of GdTiGe was performed. Before hydrogenation they show an antiferromagnetic transition at around 412 K and a ferromagnetic transition at 376 K, respectively. Hydrogenation of both forms leads to formation of the same hydride GdTiGeH which crystallizes with a filled CeScSi-type structure where all the [Gd(4)] tetrahedra are filled by hydrogen. This hydride is paramagnetic in the temperature range 4-300 K. The slightly negative value of the paramagnetic Curie temperature θ(p) confirms that all ferromagnetic interactions were destroyed in the case of the CeScSi-type form. From first-principles calculations with the PAW GGA methodology, the localization of hydrogen within the [Gd(4)] tetrahedra was confirmed through energetic stabilization. It was also seen that the energy changes significantly with volume, indicating the itinerant (delocalized) role of the electrons in the magnetism. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.title.en | Drastic change of the ferromagnetic properties of the ternary germanide GdTiGe through hydrogen insertion | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/ic201579r | |
| dc.subject.hal | Chimie/Matériaux | |
| dc.subject.hal | Chimie/Chimie inorganique | |
| bordeaux.journal | Inorganic Chemistry | |
| bordeaux.page | 11046-11054 | |
| bordeaux.volume | 50 | |
| bordeaux.issue | 21 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00641699 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00641699v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Inorganic%20Chemistry&rft.date=2011&rft.volume=50&rft.issue=21&rft.spage=11046-11054&rft.epage=11046-11054&rft.eissn=0020-1669&rft.issn=0020-1669&rft.au=GAUDIN,%20Etienne&MATAR,%20Samir%20F.&P%C3%96TTGEN,%20Rainer&EUL,%20Matthias&CHEVALIER,%20Bernard&rft.genre=article |
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