期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 93, 期 3, 页码 624-626出版社
WILEY
DOI: 10.1111/j.1551-2916.2009.03470.x
关键词
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资金
- Engineering and Physical Sciences Research Council
Solid solution formation in the system (1-x) [(Na(0.5)K(0.5)NbO3)(0.93)-(LiTaO3)(0.07)]-x[BiScO3] has been investigated for compositions, 0 < x < 0.05. The tetragonal c/a ratio decreases with increasing BiScO3 content, with a discontinuity at x=0.02, X-ray diffraction patterns appear pseudo-cubic for x > 0.02. There is a 10-fold reduction in grain size between x=0.015 and x=0.02: dielectric peaks become suppressed and broadened at this point. Piezoelectric d(33) charge coefficients decrease across the compositional range. Results are discussed in terms of chemical inhomogeneity and grain-size effects.
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