Composition-Dependent Dielectric and Piezoelectric Properties of Na1-zKzNbO3 Ceramics
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Title |
Composition-Dependent Dielectric and Piezoelectric Properties of Na1-zKzNbO3 Ceramics
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Creator |
Singh, Surendra
Biswas, Don Bahuguna, A S Thapliyal, Prashant Rohilla, Vishal Kathait, G S Panwar, N S Sharma, Prolay |
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Subject |
Ceramics
Dielectric constant Electric conductivity Grain size SEM Ferroelectrics |
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Description |
335-342
Sodium potassium niobate, Na1-zKzNbO3, is a ceramic material that exhibits dielectric and piezoelectric properties, which can be tuned by changing the composition of the material. The dielectric properties of Na1-zKzNbO3 ceramics are characterized by a high dielectric constant and low loss, which makes them useful for applications in capacitors, filters, and resonators. Pellets of Na1-zKzNbO3 (0.120 ≤ z ≤ 0.210) were prepared by the solid-state reaction technique. The structural and morphological study was carried out on the prepared compositions at room temperature (RT). A Piezoelectric indirect constant (d33*) was obtained for the prepared compositions. Additionally, dielectric measurements were performed at frequencies 10-1000 kHz, from ambient temperature to 500°C. For the prepared compositions with z = 0.175, a break in the XRD peak shifting patterns was observed, and the average grain size was calculated at 2.044 ± 0.3 μm. Also, the maximum indirect piezoelectric constant (d33*) was observed for z = 0.175 among the prepared compositions. For the prepared compositions, compositions with z = 0.140 showed the highest dielectric constant (peak value 1486, 385°C). Among the prepared samples, dielectric constant (ε), loss tangent (tan δ) and electric conductivity (σ) were found to be minimum for the composition with z = 0.175 at all the measured frequencies. Anomalous dielectric, piezoelectric and structural properties are evident for the samples with z = 0.175 among the prepared samples. Overall, the composition-dependent dielectric and piezoelectric properties of Na1-zKzNbO3 ceramics make them promising materials for use in various electronic and sensing applications where high-performance dielectric and piezoelectric materials are required. |
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Date |
2023-05-25T08:41:38Z
2023-05-25T08:41:45Z 2023-05-25T08:41:38Z 2023-05-25T08:41:45Z 2023-05 |
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Type |
Article
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Identifier |
0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/61944 https://doi.org/10.56042/ijpap.v61i5.70679 |
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Language |
en
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Publisher |
NIScPR-CSIR,India
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Source |
IJPAP Vol.61(05) [May 2023]
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