Fabrication and Structural Properties of LaNb 1‐x As x O 4 Ceramics

Lanthanum niobate substituted with arsenic was synthesized by three methods: solid state reaction from binary oxides and two different methods combining co‐precipitation and solid‐state reaction. In the first of the combined methods LaNb 1‐x As x O 4 was synthesized from LaAsO 4, obtained from co‐pr...

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Published in:ChemistrySelect (Weinheim) 2019-08, Vol.4 (29), p.8645-8651
Main Authors: Wachowski, Sebastian L., Kamecki, Bartosz, Winiarz, Piotr, Dzierzgowski, Kacper, Jurkowski, Michał, Dzisevič, Jaroslav, Mielewczyk‐Gryń, Aleksandra, Gazda, Maria
Format: Article
Language:English
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Summary:Lanthanum niobate substituted with arsenic was synthesized by three methods: solid state reaction from binary oxides and two different methods combining co‐precipitation and solid‐state reaction. In the first of the combined methods LaNb 1‐x As x O 4 was synthesized from LaAsO 4, obtained from co‐precipitation method, and lanthanum and niobium oxides. In the second LaNbO 4 was first synthesized from binary oxides and then mixed with LaAsO 4 and fired in the second step to obtain the final material. Single phase materials could not be synthesized via solid‐state synthesis, whilst it was possible with both of the combined methods. Structural parameters of the materials obtained with both methods were similar what shows that they do not relate to the synthesis method. Ceramics obtained with both combined methods were dense, however, the density of the ceramics formed from LaAsO 4 and LaNbO 4 was higher.
ISSN:2365-6549
2365-6549
DOI:10.1002/slct.201902024