The solid solutions (Ce1-xLax)RuSn
| hal.structure.identifier | Westfälische Wilhelms-Universität Münster = University of Münster [WWU] | |
| dc.contributor.author | NIEHAUS, Oliver | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHEVALIER, Bernard | |
| hal.structure.identifier | European Synchrotron Radiation Facility [ESRF] | |
| dc.contributor.author | ABDALA, Paula | |
| hal.structure.identifier | Westfälische Wilhelms-Universität Münster = University of Münster [WWU] | |
| dc.contributor.author | WINTER, Florian | |
| hal.structure.identifier | Westfälische Wilhelms-Universität Münster = University of Münster [WWU] | |
| dc.contributor.author | PÖTTGEN, Rainer | |
| dc.date.issued | 2013 | |
| dc.identifier.issn | 0932-0776 | |
| dc.description.abstractEn | X-Ray-pure samples of the solid solutions (Ce1−xLax)RuSn were obtained up to x = 0.5. Powder diffraction data show the CeRuSn-type superstructure up to x ≈ 0.3 and the CeCoAl-type subcell for higher lanthanum contents. The structure of a single crystal with x = 0.5 was refined on the basis of single-crystal X-ray diffractometer data: CeCoAl type, C2/m, a = 1160.8(2), b = 477.6(1), c = 511.6(1) pm, β =102.97(2)°, wR = 0.0510, 444 F2 values, 20 variables. Magnetic investigations were performed for all samples up to a lanthanum content of x = 0.4. No cooperative phenomena could be observed, and all samples show Curie-Weiss behavior above a certain temperature. The cerium valence is about 3.32(2) for all samples of the solid solution. Hence, La3+ has to replace Ce3+as well as Ce4+ in a particular quantity. The electrical resistivity measurements confirm the suppression of the magnetic ordering and the structural transition upon replacement of cerium by lanthanum. 119Sn Mössbauer spectra of samples with x = 0.2 and 0.5 are indicative of single tin sites with isomer shifts of δ = 1.86(1) mm s−1 for x = 0.2 and δ = 1.88(1) mm s−1 for x = 0.5. Both signals are subject to significant quadrupole splitting, a consequence of the low site symmetry. Results of XANES measurements are perfectly in line with the cerium valences determined by susceptibility measurements and yield a constant value of 3.16(1) for all investigated compounds. | |
| dc.language.iso | en | |
| dc.publisher | Verlag der Zeitschrift Fuer Naturforschung | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/ | |
| dc.subject.en | Cerium | |
| dc.subject.en | Stannide | |
| dc.subject.en | Intermediate Valence | |
| dc.title.en | The solid solutions (Ce1-xLax)RuSn | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.5560/ZNB.2013-3257 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Zeitschrift fur Naturforschung B | |
| bordeaux.page | 1279-1287 | |
| bordeaux.volume | 68 | |
| bordeaux.issue | 12 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00921281 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00921281v1 | |
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