Nanopowders of Na0.5K0.5NbO3 Prepared by the Pechini Method
A Pechini‐based chemical synthesis route was used to produce powders of Na0.5K0.5NbO3 (NKN). The thermochemistry of the gel was investigated using thermogravimetric analysis‐fourier transform infrared (TGA‐FTIR) evolved gas analysis; in addition, powder FTIR was used to analyze the gel residues afte...
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Published in | Journal of the American Ceramic Society Vol. 92; no. 3; pp. 758 - 761 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Malden, USA
Blackwell Publishing Inc
01.03.2009
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Online Access | Get full text |
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Summary: | A Pechini‐based chemical synthesis route was used to produce powders of Na0.5K0.5NbO3 (NKN). The thermochemistry of the gel was investigated using thermogravimetric analysis‐fourier transform infrared (TGA‐FTIR) evolved gas analysis; in addition, powder FTIR was used to analyze the gel residues after different heat treatments. The final decomposition of the organic components occurred at ∼650°C. However, hydrated–carbonated secondary phase(s) were detected by FTIR in powders that had been heated at 700°C, indicating that the NKN nanopowders are susceptible to a reaction with atmospheric moisture and carbon dioxide. The NKN particle sizes were in the range 50–150 nm after decomposition at 700°C. |
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Bibliography: | istex:A3558CB565C0DCB597A56975F976F12D6A7E1E33 ark:/67375/WNG-ZDW4MDKH-2 ArticleID:JACE02950 ‡ J. Nino—contributing editor Present address: Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, U.K. ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0002-7820 1551-2916 |
DOI: | 10.1111/j.1551-2916.2009.02950.x |