Shivakumara, C. ; Hegde, M. S. ; Rajagopal, H. ; Sequiera, A. (2000) Neutron diffraction studies of La4BaCu4MO13+δ (M = Ni and Co) oxides Materials Research Bulletin, 35 (12). pp. 2063-2068. ISSN 0025-5408
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Official URL: http://dx.doi.org//10.1016/S0025-5408(00)00401-3
Related URL: http://dx.doi.org/10.1016/S0025-5408(00)00401-3
Abstract
The structures of La4BaCu4NiO13.20 and La4BaCu4CoO13.35 oxides synthesized in NaOH-KOH flux at 450°C were studied using powder neutron diffraction Rietveld analysis. These oxides crystallize in a tetragonal structure in the P4/m space group with Ni3+ or Co3+ partially occupying 6-coordinated (1a) and 5-coordinated (4j) sites of the La4BaCu5O13+δ system. Increase in oxygen content with Ni and Co substitution is reflected in the increase in unit-cell volume, compared with that of the parent La4BaCu5O13+δ.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | A. Oxides; B. Chemical Synthesis; C. Neutron Scattering; D. Crystal Structure |
| ID Code: | 15783 |
| Deposited On: | 13 Nov 2010 12:33 |
| Last Modified: | 03 Jun 2011 08:24 |
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