Crystal and magnetic structure studies of SmFeTiO5-based antiferromagnetic materials
Compounds with the RMn2O5 structure type have attracted attention due to reports of magnetoelectric and multiferroic properties. We have obtained the isostructural SmFe1-xCrxTiO5 materials (x = 0, 0.25, 0.50, 0.75, 1). Initial results indicate a rich, mainly antiferromagnetic behavior and magnetodielectricity at low temperatures. Transition metal cations are distributed between sites with octahedral and square pyramidal geometries. Interatomic distances from XRPD and Mössbauer spectroscopy results indicate that site distribution is changing across the series. It is our hypothesis that the differences observed in physical properties are strongly influenced by this distribution. Neutron powder diffraction will allow the observation and refinement of magnetic structures as well as reveal the distribution of transition metals, oxygen content and position, and M-O-M angles, all relevant for the interpretation of magnetic properties. Natural samarium is a strong absorbent of thermal neutrons, but this will be mitigated by the use of higher-energy neutrons and by the substitution of natural Sm by the Sm-152 isotope. We are proposing a combined study in instruments D4 and D2B.
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The recommended format for citing this dataset in a research publication is in the following format:
BOLLETTA Juan Pablo; CUELLO Gabriel; Henry E. Fischer; JOUEN Samuel; KOBZI Balazs; MAIGNAN Antoine; MARTIN Christine and SUARD Emmanuelle. (2021). Crystal and magnetic structure studies of SmFeTiO5-based antiferromagnetic materials. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2815
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