Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1334046 | Journal of Solid State Chemistry | 2005 | 8 Pages |
A powder sample of Sr3FeMoO7 was synthesized by solid-state reaction in reduced atmosphere (5% H2/Ar). At room temperature, Sr3FeMoO7 crystallizes in a typical Ruddlesden–Popper (n=2)(n=2) structure in the space group I4/mmm , a=3.9309(2)Å and c=20.435(2)Å. The structure refinement indicates that the Fe and Mo ions are randomly distributed in a single B-site with small fraction of B -site and oxygen vacancies. At low temperature, long-range magnetic interaction was observed. The antiferromagnetic magnetic interaction can be described with a large unit cell, am=bm=2an and cm=cncm=cn, in the magnetic space group An′.
Graphical abstractThe magnetic structure of Sr3FeMoO7 was determined through neutron diffraction at 10 K. It was refined with an antiferromagnetic model in the magnetic space group An ′ with the cell parameters a=5.5561(3)Å and c=20.430(2)Å. The B -site atoms split into two independent atoms, which are antiferromagnetically coupled with almost the same magnetic moment μM1=1.82(1)μBμM1=1.82(1)μB and μM2=1.68(1)μBμM2=1.68(1)μB.Figure optionsDownload full-size imageDownload as PowerPoint slide