Piezo and pyroelectricity in spark plasma sintered potassium sodium niobate (KNN) ceramics

T. Morshed; E. Ul Haq; C. Silien; S. A.M. Tofail; M. A. Zubair; M. F. Islam

doi:10.1109/TDEI.2020.008820

Piezo and pyroelectricity in spark plasma sintered potassium sodium niobate (KNN) ceramics

T. Morshed, E. Ul Haq, C. Silien, S. A.M. Tofail, M. A. Zubair, M. F. Islam

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We report fabrication and piezo-and pyroelectric characterizations of spark plasma sintered (SPS) lead-free K0.5Na0.5NbO3 (KNN) ceramics. SPS sintering produced dense KNN (99% of the theoretical density) at sintering temperature as low as 900°C. A significant improvement in the dielectric, piezoelectric and pyroelectric properties is observed after annealing the sample at 925°C. The measured piezoelectric coefficient d33 and pyroelectric coefficient of poled KNN ceramic are 94 pC/N and 22.84 μCm-2K-1, respectively. These values are high enough to focus on the further enhancement of the material properties through adequate control of the phase structure of the material for lead-free energy harvesting applications.

Original language	English
Article number	9215089
Pages (from-to)	1428-1432
Number of pages	5
Journal	IEEE Transactions on Dielectrics and Electrical Insulation
Volume	27
Issue number	5
DOIs	https://doi.org/10.1109/TDEI.2020.008820
Publication status	Published - Oct 2020

Keywords

(KNaNbO) KNN
lead-free
piezoelectric
pyroelectric
spark plasma sintering (SPS)

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10.1109/TDEI.2020.008820

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title = "Piezo and pyroelectricity in spark plasma sintered potassium sodium niobate (KNN) ceramics",

abstract = "We report fabrication and piezo-and pyroelectric characterizations of spark plasma sintered (SPS) lead-free K0.5Na0.5NbO3 (KNN) ceramics. SPS sintering produced dense KNN (99% of the theoretical density) at sintering temperature as low as 900°C. A significant improvement in the dielectric, piezoelectric and pyroelectric properties is observed after annealing the sample at 925°C. The measured piezoelectric coefficient d33 and pyroelectric coefficient of poled KNN ceramic are 94 pC/N and 22.84 μCm-2K-1, respectively. These values are high enough to focus on the further enhancement of the material properties through adequate control of the phase structure of the material for lead-free energy harvesting applications.",

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author = "T. Morshed and Haq, {E. Ul} and C. Silien and Tofail, {S. A.M.} and Zubair, {M. A.} and Islam, {M. F.}",

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AU - Morshed, T.

AU - Haq, E. Ul

AU - Silien, C.

AU - Tofail, S. A.M.

AU - Zubair, M. A.

AU - Islam, M. F.

PY - 2020/10

Y1 - 2020/10

N2 - We report fabrication and piezo-and pyroelectric characterizations of spark plasma sintered (SPS) lead-free K0.5Na0.5NbO3 (KNN) ceramics. SPS sintering produced dense KNN (99% of the theoretical density) at sintering temperature as low as 900°C. A significant improvement in the dielectric, piezoelectric and pyroelectric properties is observed after annealing the sample at 925°C. The measured piezoelectric coefficient d33 and pyroelectric coefficient of poled KNN ceramic are 94 pC/N and 22.84 μCm-2K-1, respectively. These values are high enough to focus on the further enhancement of the material properties through adequate control of the phase structure of the material for lead-free energy harvesting applications.

AB - We report fabrication and piezo-and pyroelectric characterizations of spark plasma sintered (SPS) lead-free K0.5Na0.5NbO3 (KNN) ceramics. SPS sintering produced dense KNN (99% of the theoretical density) at sintering temperature as low as 900°C. A significant improvement in the dielectric, piezoelectric and pyroelectric properties is observed after annealing the sample at 925°C. The measured piezoelectric coefficient d33 and pyroelectric coefficient of poled KNN ceramic are 94 pC/N and 22.84 μCm-2K-1, respectively. These values are high enough to focus on the further enhancement of the material properties through adequate control of the phase structure of the material for lead-free energy harvesting applications.

KW - (KNaNbO) KNN

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KW - piezoelectric

KW - pyroelectric

KW - spark plasma sintering (SPS)

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Piezo and pyroelectricity in spark plasma sintered potassium sodium niobate (KNN) ceramics

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Keywords

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