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Ferroelectrics

Article . 2015 . Peer-reviewed

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Ferroelectrics

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Ferroelectric Fatigue of KNN Ceramics

descriptionPublicationkeyboard_double_arrow_right Article 01 Jun 2015 English Publisher:Informa UK LimitedJournal:Ferroelectrics, volume 481, pages 119-125 (issn: 0015-0193, eissn: 1563-5112,

Authors: Amarnath Sen; Bidisha Tah; S. Goswami; Japes Bera; D. Kundu; Shrabanee Sen; Prasanta Kumar Sinha; +1 Authors

doi: 10.1080/00150193.2015.1051446

Ferroelectric Fatigue of KNN Ceramics

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Abstract

Phase-pure KNN (K0.5Na0.5NbO3) was synthesized from Rochelle salt and niobium pentoxide through solid-state route and the synthesized powder was sintered at 1130°C to get dense KNN ceramics. After polarization fatigue test, it was found that the d33, kP and remanent polarization (Prem) of KNN decreased substantially. The reduction of the aforesaid parameters after fatigue was much higher in comparison to that of soft PZT (Navy type VI) tested under identical conditions. The possible reason behind such behaviour has been delineated.

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