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Fabrication and Structural Properties of LaNb 1‐x As x O 4 Ceramics
Author(s) -
Wachowski Sebastian L.,
Kamecki Bartosz,
Winiarz Piotr,
Dzierzgowski Kacper,
Jurkowski Michał,
Dzisevič Jaroslav,
MielewczykGryń Aleksandra,
Gazda Maria
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201902024
Subject(s) - lanthanum , materials science , niobium , ceramic , fabrication , precipitation , solid solution , phase (matter) , solid state , mineralogy , inorganic chemistry , chemistry , metallurgy , physics , medicine , alternative medicine , organic chemistry , pathology , meteorology
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.