Samal, S. L. ; Magdaleno, T. ; Ramanujachary, K. V. ; Lofland, S. E. ; Ganguli, A. K. (2010) New double perovskites, LaBaTaNi1−xCoxO6: structural, dielectric and magnetic studies Solid State Sciences, 12 (8). pp. 1382-1386. ISSN 1293-2558
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.solidstatesciences.2010.05.014
Abstract
Double perovskites of the type LaBaNi1−xCoxTaO6 (0 ≤ x ≤ 1) have been synthesized by solid state method. The compounds crystallize in the tetragonal space group, I4/m. Rietveld refinement has been carried out to determine the phase purity and to study the cation ordering. X-ray photoelectron spectroscopy confirms Co(II) in all compositions. The end members in LaBaNi1−xCoxTaO6 show high dielectric constant values. Antiferromagnetic ordering has been observed for all the compositions and the ordering temperature in LaBaNi1−xCoxTaO6 gradually decreases with increase in Co doping, which has been attributed to the decrease in covalence of Co/Ni-O bonds.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Perovskites; Rietveld Refinement; Dielectric Properties |
| ID Code: | 61992 |
| Deposited On: | 16 Sep 2011 03:58 |
| Last Modified: | 16 Sep 2011 03:58 |
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