Synthesis and structure of new pyrochlore-type oxides Ln2ScNbO7 (Ln = Pr, Nd, Eu, Gd, Dy)
| dc.creator | Zouari, Siwar | |
| dc.creator | Ballou, Rafik | |
| dc.creator | Cheikh-Rouhou, Abdelwaheb | |
| dc.creator | Strobel, Pierre | |
| dc.date | 2008-12-15 | |
| dc.date.accessioned | 2026-07-07T12:12:52Z | |
| dc.date.available | 2026-07-07T12:12:52Z | |
| dc.description | We report the synthesis and structural study of mixed oxides in the Ln2ScNbO7 series. New phases with Ln = Pr, Eu, Gd and Dy are obtained. All crystallize in the cubic pyrochlore structure type, space group F-d3m, with no Sc-Nb ordering on the B-site. The structures are determined by Rietveld refinement. The evolution of cell parameters, interatomic distances and angles as a function of lanthanide cation size is discussed. Magnetic measurements show the absence of ordering down to 2 K, in agreement with the presence of strong geometric frustration in the lanthanide sublattice. The europium phase shows a peculiar magnetic behaviour; its magnetic susceptibility becomes constant below ca 50 K. This feature confirms the behaviour observed previously on Eu2Ti2O7 and is ascribed to crystal field effects. | |
| dc.identifier | https://arxiv.org/abs/0812.2758 | |
| dc.identifier | http://arxiv.org/abs/0812.2758 | |
| dc.identifier | Materials Letters 62 (2008) 3767 | |
| dc.identifier | doi:10.1016/j.matlet.2008.04.060 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/210686 | |
| dc.subject | Materials Science | |
| dc.title | Synthesis and structure of new pyrochlore-type oxides Ln2ScNbO7 (Ln = Pr, Nd, Eu, Gd, Dy) | |
| dc.type | text |