dc.creator | Arciniegas Jaimes, Diana Marcela | |
dc.creator | Blanco, Marìa Cecilia | |
dc.creator | Pomiro, Fernando | |
dc.creator | Tirao, German Alfredo | |
dc.creator | Nassif, Vivian M. | |
dc.creator | Cuello, Gabriel Julio | |
dc.creator | Alonso, José A. | |
dc.creator | Carbonio, Raul Ernesto | |
dc.date.accessioned | 2018-11-20T14:07:46Z | |
dc.date.accessioned | 2022-10-15T00:59:43Z | |
dc.date.available | 2018-11-20T14:07:46Z | |
dc.date.available | 2022-10-15T00:59:43Z | |
dc.date.created | 2018-11-20T14:07:46Z | |
dc.date.issued | 2017-05-15 | |
dc.identifier | Arciniegas Jaimes, Diana Marcela; Blanco, Marìa Cecilia; Pomiro, Fernando; Tirao, German Alfredo; Nassif, Vivian M.; et al.; Synthesis, structural characterization and magnetic properties of the series of double perovskites Ba1+xLa1−xMnSbO6with 0.1 ≤ x ≤ 0.7; Elsevier Science Sa; Journal of Alloys and Compounds; 704; 15-5-2017; 776-787 | |
dc.identifier | 0925-8388 | |
dc.identifier | http://hdl.handle.net/11336/64715 | |
dc.identifier | 1873-4669 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4327620 | |
dc.description.abstract | Double perovskites Ba1+xLa1−xMnSbO6were synthesized by traditional ceramic methods in air as polycrystalline powders. The 0.1 ≤ x ≤ 0.2 compounds belong to the I 2/m monoclinic space group, while the perovskites with x ≥ 0.3 belong to the I 4/m tetragonal space group. The effective presence of mixtures of Mn2+/Mn3+has been well established by X-ray Emission Spectroscopy. Ba1+xLa1−xMnSbO6(0.1 ≤ x ≤ 0.5) oxides display signs of superparamagnetism in the 40–160 K range, which arises from 3D-nanoclusters formed in regions which are rich in Mn2+/3+–O–Mn2+/3+superexchange paths originated by the antisite disorder. The analysis of the M vs H hysteresis loops shows that, as x increases, the number of 3D-nanoclusters rises and the number of magnetic ions in the 3D-nanoclusters decreases. The small 3D-nanoclusters cannot sustain magnetic order inside them and this is the reason for the absence of superparamagnetism for x = 0.6 and 0.7. The analysis of the M vs H curves also shows the presence of a weak ferromagnetism which is generated by the canting of the spins in the antiferromagnetic matrix. Neutron Powder Diffraction data reveals that there is long range antiferromagnetic ordering below ≈20 K. | |
dc.language | eng | |
dc.publisher | Elsevier Science Sa | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.jallcom.2016.12.308 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925838816342360 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | CRYSTAL STRUCTURE | |
dc.subject | DOUBLE PEROVSKITES | |
dc.subject | MAGNETIC MEASUREMENTS | |
dc.subject | ORDER-DISORDER EFFECTS | |
dc.subject | POWDER NEUTRON DIFFRACTION | |
dc.subject | X-RAY EMISSION SPECTROSCOPY | |
dc.title | Synthesis, structural characterization and magnetic properties of the series of double perovskites Ba1+xLa1−xMnSbO6with 0.1 ≤ x ≤ 0.7 | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |