dc.creator | Pinacca, Ruben Miguel | |
dc.creator | Viola, Maria del Carmen | |
dc.creator | Pedregosa, Jose Carmelo | |
dc.creator | Carbonio, Raul Ernesto | |
dc.creator | Martínez Lope, M. J. | |
dc.creator | Alonso, J. A. | |
dc.date.accessioned | 2018-04-19T19:29:35Z | |
dc.date.accessioned | 2018-11-06T14:38:36Z | |
dc.date.available | 2018-04-19T19:29:35Z | |
dc.date.available | 2018-11-06T14:38:36Z | |
dc.date.created | 2018-04-19T19:29:35Z | |
dc.date.issued | 2011-11 | |
dc.identifier | Pinacca, Ruben Miguel; Viola, Maria del Carmen; Pedregosa, Jose Carmelo; Carbonio, Raul Ernesto; Martínez Lope, M. J.; et al.; Structural evolution of the double perovskites Sr2B'UO6 (B' = Mn, Fe, Co, Ni, Zn) upon reduction: Magnetic behavior of the uranium cations; Pergamon-Elsevier Science Ltd; Materials Research Bulletin; 46; 11; 11-2011; 1755-1760 | |
dc.identifier | 0025-5408 | |
dc.identifier | http://hdl.handle.net/11336/42737 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1888527 | |
dc.description.abstract | We describe the preparation of five perovskite oxides obtained upon reduction of Sr2B′UO6 (B′ = Mn, Fe, Co, Ni, Zn) with H2/N2 (5%/95%) at 900 °C during 8 h, and their structural characterization by X-ray powder diffraction (XRPD). During the reduction process there is a partial segregation of the elemental metal when B′ = Co, Ni, Fe, and the corresponding B′O oxide when B′ = Mn, Zn. Whereas the parent, oxygen stoichiometric double perovskites Sr2B′UO6 are long-range ordered concerning B′ and U cations. The crystal structures of the reduced phases, SrB′0.5−xU0.5+xO3 with 0.37 < x < 0.27, correspond to simple, disordered perovskites; they are orthorhombic, space group Pnma (No. 62), with a full cationic disorder at the B site. Magnetic measurements performed on the phase with B′ = Zn, indicate uncompensated antiferromagnetic ordering of the U5+/U4+ sublattice below 30 K. | |
dc.language | eng | |
dc.publisher | Pergamon-Elsevier Science Ltd | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.materresbull.2011.08.008 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0025540811003850 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | PEROVSKITES | |
dc.subject | SR2B'UO6 | |
dc.subject | CRYSTAL | |
dc.subject | STRUCTURE | |
dc.subject | MAGNETISM | |
dc.subject | URANIUM | |
dc.title | Structural evolution of the double perovskites Sr2B'UO6 (B' = Mn, Fe, Co, Ni, Zn) upon reduction: Magnetic behavior of the uranium cations | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |