Phase structure, Raman spectroscopic, microstructure and dielectric properties of (K0.5Na0.5)NbO3–Bi(Li0.5Nb0.5)O3 lead-free ceramics
(1- x )(K 0.5 Na 0.5 )NbO 3 – x Bi(Li 0.5 Nb 0.5 )O 3 [(1- x )KNN– x BLN, 0 ≤ x ≤ 0.02] dielectric ceramics were synthesized by an ordinary sintering technique. The effects of Bi(Li 0.5 Nb 0.5 )O 3 addition on the phase structure, microstructure and dielectric properties of KNN ceramics were studi...
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| Veröffentlicht in: | Applied physics. A, Materials science & processing Materials science & processing, 2019-09, Vol.125 (9), p.1-10, Article 608 |
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| Hauptverfasser: | , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | (1-
x
)(K
0.5
Na
0.5
)NbO
3
–
x
Bi(Li
0.5
Nb
0.5
)O
3
[(1-
x
)KNN–
x
BLN, 0 ≤
x
≤ 0.02] dielectric ceramics were synthesized by an ordinary sintering technique. The effects of Bi(Li
0.5
Nb
0.5
)O
3
addition on the phase structure, microstructure and dielectric properties of KNN ceramics were studied. The phase structure of ceramics shifted from the orthorhombic to pseudo-cubic phase structure with increasing the content of Bi(Li
0.5
Nb
0.5
)O
3
. The addition of Bi(Li
0.5
Nb
0.5
)O
3
depressed the transition temperature of the orthogonal and tetragonal phases, which is a benefit to the thermal stability of KNN ceramics. Especially, as
x
= 0.01, the ceramics have a high relative permittivity
ε
r
(~ 1557), low dielectric loss tan
δ
( |
|---|---|
| ISSN: | 0947-8396 1432-0630 |
| DOI: | 10.1007/s00339-019-2860-x |