Structural evolution, sintering behavior and microwave dielectric properties of (1−x)Li3NbO4–xLiF (0≤x≤0.9)
Sintering behavior, microstructure and microwave dielectric properties of (1−x)Li3NbO4–xLiF (0≤x≤0.9) ceramics have been studied in this paper. Continuous solid solution with rock salt structure formed across the entire compositional range. Phase transformed from ordered body-centered cubic phase to...
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Published in | Journal of the European Ceramic Society Vol. 32; no. 6; pp. 1251 - 1259 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
01.06.2012
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Subjects | |
Online Access | Get full text |
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Summary: | Sintering behavior, microstructure and microwave dielectric properties of (1−x)Li3NbO4–xLiF (0≤x≤0.9) ceramics have been studied in this paper. Continuous solid solution with rock salt structure formed across the entire compositional range. Phase transformed from ordered body-centered cubic phase to short range ordered face-centered cubic phase with the addition of LiF. The x>0.4 compositions could be densified at 850°C/2h. The optimized Q×f value for each composition increased with the increase of LiF content and saturated at about 75,000GHz when x≥0.15, whereas the optimized dielectric permittivity decreased with the increase of LiF content. All specimens exhibited negative τf value. The chemical compatibilities with copper (Cu) in the case of x=0.4 composition and silver (Ag) in the case of x=0.5 composition were also investigated, respectively. No chemical reaction has taken place between the matrix phase and Ag or Cu after sintering at 850°C/2h or 950°C/2h, respectively. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 0955-2219 1873-619X |
DOI: | 10.1016/j.jeurceramsoc.2011.12.026 |