Please use this identifier to cite or link to this item: https://dipositint.ub.edu/dspace/handle/2445/208256
Title: Structural and electrical properties of Zr-doped K0.48 Na 0.52 NbO 3 ceramics: “Hard” lead-free piezoelectric
Author: Beltran-Mir, Héctor
Vendrell, Xavier
Dos Santos-Veiga, Emerson
Mestres i Vila, Ma. Lourdes
Cordoncillo, Eloísa
Keywords: Sodi
Potassi
Propietats elèctriques
Sodium
Potassium
Electric properties
Issue Date: 19-Jan-2023
Publisher: Consejo Superior de Investigaciones Científicas (CSIC)
Abstract: The structural and electrical properties of K0.48Na0.52Nb1−xZrxO3−δ (x = 0–0.04) ceramics prepared by the conventional solid-state reaction method were studied. Pellets with composition x ≤ 0.03 sintered at 1125 °C for 2 h showed single-phase of potassium sodium niobate (KNN) perovskite structure. Based on X-ray diffraction and Raman results, a mixture of orthorhombic and monoclinic phases was observed in intermediate compositions. The addition of Zr improved the sinterability and the “hard” piezoelectric properties of KNN, increasing the Ec and Qm values. The composition with x = 0.03 presented the highest permittivity at room temperature, ɛr′ = 363 and the lowest dielectric losses, tan δ = 0.027. Moreover, it was the sample with the highest Qm and d33 values, with Qm = 1781 and d33 = 82 pC/N. It was therefore the best compositions to obtain a “hard” piezoelectric material based on Zr-doped KNN, which makes it promising candidate for use as “hard” lead-free piezoelectric material for high power applications.
Note: Reproducció del document publicat a: https://doi.org/https://doi.org/10.1016/j.bsecv.2022.12.001
It is part of: Boletin de la Sociedad Española de Ceramica y Vidrio, 2023, num.62, p. 468-478
URI: https://hdl.handle.net/2445/208256
Related resource: https://doi.org/https://doi.org/10.1016/j.bsecv.2022.12.001
ISSN: 0366-3175
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)

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