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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
 
Creator Singh, Surendra
Biswas, Don
Bahuguna, A S
Thapliyal, Prashant
Rohilla, Vishal
Kathait, G S
Panwar, N S
Sharma, Prolay
 
Subject Ceramics
Dielectric constant
Electric conductivity
Grain size
SEM
Ferroelectrics
 
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.
 
Date 2023-05-25T08:41:38Z
2023-05-25T08:41:45Z
2023-05-25T08:41:38Z
2023-05-25T08:41:45Z
2023-05
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/61944
https://doi.org/10.56042/ijpap.v61i5.70679
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJPAP Vol.61(05) [May 2023]