| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1503982 | Solid State Sciences | 2016 | 6 Pages |
•Rietveld refinement of XRD confirms the ordered monoclinic crystal structure of Ba2CeSbO6.•Vibrational properties of BCSO are studied using Raman and FTIR spectroscopies.•The core level 3d XPS spectrum of Ce confirms the presence of Ce3+ and Ce4+ in BCSO.•Anti-ferromagnetic long range order is found below 59 K.•The presence of mixed valence states of Ce, the experimental magnetic moment becomes low.
The structural and magnetic properties of a double perovskite oxide Ba2CeSbO6 (BCSO) synthesized by solid state reaction technique have been investigated. The Rietveld refinement of the X-ray diffraction pattern of BCSO suggests the monoclinic crystal structure at room temperature with P21/n space group. The vibrational properties of BCSO are investigated by the Fourier transform Infrared and Raman spectroscopy. The Raman spectrum confirms the B-site ordering of cations in BCSO. The temperature dependent magnetic susceptibility data in the field cooled mode show the anti-ferromagnetic behaviour of BCSO below 59 K. The core level X-ray photoemission (XPS) spectrum of Ce-3d and Sb-3d states confirms the presence of multiple oxidation states of these cations. The presence of both the Ce3+ and Ce4+ ions in BCSO gives the 4f4−δ intermediate valence state which may reduce the effective magnetic moment with respect to the system having single valence Ce3+ ion.
Graphical abstractRietveld refinement suggests the monoclinic ordered crystal structure of an anti-ferromagnetic double perovskite Ba2CeSbO6. XPS study confirms the presence of two oxidation states of Ce.Figure optionsDownload full-size imageDownload as PowerPoint slide
