Shivakumara, C. ; Subbanna, G. N. ; Lalla, N. P. ; Hegde, M. S. (2004) Na substitution for La- and Mn-sites in LaMnO3 from alkali halide fluxes: low temperature synthesis, structure and properties Materials Research Bulletin, 39 (1). pp. 71-81. ISSN 0025-5408
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00255...
Related URL: http://dx.doi.org/10.1016/j.materresbull.2003.09.027
Abstract
La1-xNaxMn1-yNayO3 (0.12<x<0.16; 0.04<y<0.07) have been synthesized from NaBr and NaI fluxes at relatively low temperature of 850 and 750 °C, respectively. Final composition of these oxides was obtained from chemical analysis of the elements present. The flux grown oxides crystallize in the rhombohedral structure (space group R-3c, No. 167) and are ferromagnetic metals (FMM). Chemical analysis and Rietveld refinement of X-ray data indicate Na ion is substituted for both La- and Mn-sites in the compound prepared from NaBr and NaI fluxes with 33 and 49% of Mn4+ concentration, respectively.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | A. Oxides; B. Chemical Synthesis; C. X-ray Diffraction; D. Magnetic Properties |
| ID Code: | 15849 |
| Deposited On: | 13 Nov 2010 12:26 |
| Last Modified: | 03 Jun 2011 07:36 |
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