Ba 2 CoBO 6 (B = Mo, W) perovskites have been prepared in polycrystalline form by thermal treatment, in air, of previously decomposed citrate precursors. These materials have been characterized by X-ray (XRD) and neutron powder diffraction (NPD) data and magnetization measurements. At room temperatu
Preparation, crystal and magnetic structure of the double perovskite Ba2FeWO6
✍ Scribed by A.K. Azad; A. Mellergård; S.-G. Eriksson; S.A. Ivanov; J. Eriksen; H. Rundlöf
- Book ID
- 106024320
- Publisher
- Springer
- Year
- 2002
- Tongue
- English
- Weight
- 175 KB
- Volume
- 74
- Category
- Article
- ISSN
- 1432-0630
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## Abstract For Abstract see ChemInform Abstract in Full Text.
Structures of the double perovskites Ba 2 Sr 1Àx Ca x WO 6 have been studied by the profile analysis of X-ray diffraction data. The end members, Ba 2 SrWO 6 and Ba 2 CaWO 6 , have the space group I2/m (tilt system a 0 b À b À ) and Fm3 ¯m (tilt system a 0 a 0 a 0 ), respectively. By increasing the C
In this work we present temperature dependent infrared reflectivity and absorption of Sr 2 FeWO 6 between 700 and 17 K measured from 40 to 10000 cm 21 . The reflectivity spectra show well defined phonon bands peaking at 143, 227, 377 and 625 cm 21 assigned to overlapping vibrational modes split from