Structure, magnetic and electrical properties of CeIrSb and its hydride CeIrSbH<sub>0.8</sub>
| 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 | CHEVALIER, Bernard | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | HERMES, Wilfried | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | RODEWALD, Ute Ch. | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | PÖTTGEN, Rainer | |
| dc.date.issued | 2009 | |
| dc.identifier.issn | 0022-4596 | |
| dc.description.abstractEn | The ternary antimonide CeIrSb absorbs hydrogen under moderate temperature and pressure conditions (4 MPa and 573 K), leading to the hydride CeIrSbH<sub>0.8</sub>. The crystal structures of both compounds have been investigated by X-ray diffraction on powders and single crystals: TiNiSi type, space group <i>Pnma</i>, <i>a</i>=735.07(7), <i>b</i>=456.93(4), <i>c</i>=792.8(1) pm, <i>R</i>1/w<i>R</i>2=0.0206/0.0395, 601 <i>F</i><sup>2</sup> values for CeIrSb and <i>a</i>=728.16(14), <i>b</i>=460.35(6), <i>c</i>=825.87(2) pm, <i>R</i>1/w<i>R</i>2=0.0322/0.0735, 528 <i>F</i><sup>2</sup> values for CeIrSbH<sub>0.8</sub> with 20 variables per refinement. Hydrogenation induces both an increase of the cell volume <i>V</i> (+4%) and a strongly anisotropic expansion of the unit cell with a maximum of 4.3% in the c direction, leading to a significant increase of the Ce–Ir and Ce–Ce distances in this direction. The H-insertion into CeIrSb leads to a magnetic transition from intermediate valence to antiferromagnetic behavior (<i>T</i><sub>N</sub>=7.0 K) evidenced by magnetization, electrical resistivity and specific heat measurements. This transition can be explained on the basis of the Doniach diagram considering the <i>J<sub>cf</sub></i> interaction between the 4<i>f</i>(Ce) and conduction electrons. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Intermetallic compounds | |
| dc.subject.en | Crystal chemistry | |
| dc.subject.en | CeIrSb | |
| dc.subject.en | Kondo system | |
| dc.subject.en | Metal hydrides | |
| dc.title.en | Structure, magnetic and electrical properties of CeIrSb and its hydride CeIrSbH<sub>0.8</sub> | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jssc.2009.04.031 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Solid State Chemistry | |
| bordeaux.page | 1827-1832 | |
| bordeaux.volume | 182 | |
| bordeaux.issue | 7 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00406973 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00406973v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Solid%20State%20Chemistry&rft.date=2009&rft.volume=182&rft.issue=7&rft.spage=1827-1832&rft.epage=1827-1832&rft.eissn=0022-4596&rft.issn=0022-4596&rft.au=GAUDIN,%20Etienne&CHEVALIER,%20Bernard&HERMES,%20Wilfried&RODEWALD,%20Ute%20Ch.&P%C3%96TTGEN,%20Rainer&rft.genre=article |
Files in this item
| Files | Size | Format | View |
|---|---|---|---|
|
There are no files associated with this item. |
|||