RT Journal Article
T1 3D to 2D Magnetic Ordering of Fe3+ Oxides Induced by Their Layered Perovskite Structure
A1 García Martín, Susana
A1 Martínez de Irujo Labalde, Xabier
A1 Amador, Ulises
A1 Ritter, Clemens
A1 Goto, Masato
A1 Patino, Midori Amano
A1 Shimakawa, Yuichi
AB The antiferromagnetic behavior of Fe3+ oxides of composition RE1.2Ba1.2Ca0.6Fe3O8, RE2.2Ba3.2Ca2.6Fe8O21, and REBa2Ca2Fe5O13 (RE = Gd, Tb) is highly influenced by the type of oxygen polyhedron around the Fe3+ cations and their ordering, which is coupled with the layered RE/Ba/Ca arrangement within the perovskite-related structure. Determination of the magnetic structures reveals different magnetic moments associated with Fe3+ spins in the different oxygen polyhedra (octahedron, tetrahedron, and square pyramid). The structural aspects impact on the strength of the Fe-O-Fe superexchange interactions and, therefore, on the Neel temperature ( ́ TN) of the compounds. The oxides present an interesting transition from three-dimensional (3D) to two-dimensional (2D) magnetic behavior above TN. The 2D magnetic interactions are stronger within the FeO6 octahedra layers than in the FeO4 tetrahedra layers.
PB ACS Publications
SN 0020-1669
YR 2021
FD 2021-05-19
LK https://hdl.handle.net/20.500.14352/8593
UL https://hdl.handle.net/20.500.14352/8593
LA eng
NO CRUE-CSIC (Acuerdos Transformativos 2021)
NO Ministerio de Ciencia e Innovación (España)
NO Ministerio de Educación, Cultura y Deporte (España)
NO Institute for Chemical Research in Kyoto University
DS Docta Complutense
RD 9 abr 2025