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Compositional Inhomogeneity in Li‐ and Ta‐Modified (K, Na)NbO 3 Ceramics
Open accessAbstract
Compositional inhomogeneity is examined in Li‐ and Ta‐modified potassium sodium niobate (K,Na)NbO 3 perovskite ceramics. The inhomogeneous distribution of the A‐site (K and Na) and B‐site (Nb and Ta) cations is found to be correlative. The inhomogeneity could not be eliminated by prolonged high‐temperature annealing in samples prepared by direct mixing of alkaline carbonates and Ta and Nb oxides. In contrast, the precursor method, where a (Nb x Ta 1− x ) 2 O 5 solid solution was first formed, led to a considerably improved compositional homogeneity and appreciably enhanced dielectric, ferroelectric, and piezoelectric properties. Our results suggest that more attention needs to be paid toward controlling the compositional fluctuation of this complex solid solution system.
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Cited by
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The structural origin of enhanced piezoelectric performance and stability in lead free ceramics
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Metadata
- Authors
- Wang, Y., Damjanovic, D., Klein, N., Hollenstein, E., & Setter, N.
- Venue
- Journal of the American Ceramic Society
- Publisher
- Wiley
- Published
- 2007-09-06
- Volume
- 90
- Issue
- 11
- Pages
- 3485-3489
- ISSN
- 0002-7820 (ISSN-L)
- 1551-2916
- OpenAlex
- W2141087398
- Cited by
- 173
- References
- 0
- FWCI
- 4.57
- Type
- journal article
- Language
- en
- Open access
- green
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- Wang, Y., Damjanovic, D., Klein, N., Hollenstein, E., & Setter, N. (2007). Compositional Inhomogeneity in Li‐ and Ta‐Modified (K, Na)NbO 3 Ceramics. Journal of the American Ceramic Society. https://doi.org/10.1111/j.1551-2916.2007.01962.x
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