RT Journal Article
T1 Multiferroism induced by spontaneous structural ordering in antiferromagnetic iron perovskites
A1 Martínez de Irujo Labalde, Xabier
A1 Goto, Masato
A1 Urones-Garrote, Esteban
A1 Amador, Ulises
A1 Ritter, Clemens
A1 Amano Patino, Midori
A1 Koedtruad, Anucha
A1 Tan, Zhenhong
A1 Shimakawa, Yuichi
A1 García Martín, Susana
AB 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 Gd(Tb), Ba, and Ca atoms with the ordering of 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 the TOOT sequence in a unit cell. A polar moment of 33.0 μC/cm2 for the Gd-oxide (23.2 μC/cm2 for the Tb one) is determined from the displacements of the cations, mainly Fe, and oxygen atoms along the b-axis. These oxides present antiferromagnetic ordering doubling the c-axis, and the magnetic structure in the Tb-compound remains up to 690 K, which is one of the highest transition temperatures reported in Fe perovskites.
PB American Chemical Society
SN 1520-5002
YR 2019
FD 2019
LK https://hdl.handle.net/20.500.14352/92201
UL https://hdl.handle.net/20.500.14352/92201
LA eng
NO Martínez De Irujo-Labalde, Xabier, et al. «Multiferroism Induced by Spontaneous Structural Ordering in Antiferromagnetic Iron Perovskites». Chemistry of Materials, vol. 31, n.o 15, agosto de 2019, pp. 5993-6000. https://doi.org/10.1021/acs.chemmater.9b02716
NO Japan Society for the Promotion of Science 
NO Ministerio de  Ciencia y Competitividad (España)
NO Ministerio de Cultura, Educación y Deporte (España)
DS Docta Complutense
RD 30 dic 2025