Please use this identifier to cite or link to this item: http://hdl.handle.net/10637/14797

Multiferroism Induced by Spontaneous Structural Ordering in Antiferromagnetic Iron Perovskites

Title: Multiferroism Induced by Spontaneous Structural Ordering in Antiferromagnetic Iron Perovskites
Authors : Martínez de Irujo-Labalde, Xabier
Goto, Masato
Urones-Garrote, Esteban
Amador Elizondo, Ulises Julio
Ritter, Clemens
Amano Patino, Midori
Koedtruad, Anucha
Tan, Zhenhong
Shimakawa, Yuichi
García-Martín, Susana
Keywords: CationsCrystal structureLayersOxidesPerovskites
Publisher: American Chemical Society
Citation: Xabier Martínez de Irujo-Labalde, Masato Goto, Esteban Urones-Garrote, Ulises Amador, Clemens Ritter, Midori E. Amano Patino, Anucha Koedtruad, Zhenhong Tan, Yuichi Shimakawa, and Susana García-Martín, Multiferroism Induced by Spontaneous Structural Ordering in Antiferromagnetic Iron Perovskites. Chemistry of Materials 2019 31 (15), 5993-6000. DOI: 10.1021/acs.chemmater.9b02716
Abstract: Room temperature multiferroism in polycrystalline antiferromagnetic Fe-perovskites is reported for the first time. In the perovskite-type oxides RE1.2Ba1.2Ca0.6Fe3O8 (RE = Gd, Tb) the interplay of layered ordering of the Gd(Tb), Ba and Ca atoms with the ordering of the FeO4-tetrahedra (T) and FeO6-octahedra (O) results in a polar crystal structure. The layered structure consists of the stacking sequence of RE/Ca-RE/Ca-Ba-RE/Ca layers in combination with TOOT sequence in a unit cell. A polar moment of 33.0 μC/cm2 for the Gd-oxide (30.1 μC/cm2 for the Tb one) is determined from displacements of the cations, mainly Fe, and oxygen atoms along the b-axis. These oxides present antiferromagnetic ordering doubling the c-axis, the magnetic structure in the Tb-compound remains up to 690 K, which is one of the highest transition temperatures reported in Fe-perovskites.
URI: http://hdl.handle.net/10637/14797
Rights : http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
ISSN: 1520-5002
Issue Date: 17-Jul-2019
Center : Universidad San Pablo-CEU
Appears in Collections:Facultad de Farmacia





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