Effect of high concentration of an ideal donor dopant on the dielectric properties of potassium sodium niobate (KNN) lead-free piezoelectric ceramic

Muhammad Qusyairie Saari, Julie Juliewatty Mohamed, Abdul Hafidz Yusoff, Zainal Arifin Ahmad, Nor Fatin Khairah Bahanurddin, Mohammad Hafizuddin Jumali, Nor Huwaida Jamil, Mohd Fariz Ab Rahman, Akhmad Herman Yuwono

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Barium Carbonate (BaCO3) was selected as dopant to examine its effect to the Potassium Sodium Niobate piezoelectric ceramic properties. In this work, the concentration of Barium was doped until highest stoichiometry disorder for stoichiometry ratio of K0.5Na0.5Nb3 (KNN). The mixed powder of KNN were calcined at 850 ˚C for 6 hours. Then the clean calcined powder was uniaxially-pressed about 200 MPa to produce green body pellet for 1 mm in thickness using Hydraulic Hand Press. The concentration of BaCO3 as dopant were ranged from 0.00 and 0.25 until 0.45. A green body pellet was conventionally sintered at 1120 °C for 2h in air atmosphere. A phase analysis was done using X-Ray Diffraction. Barium as dopant improve the density of KNN. The size of cubical grain in microstructure images were reduced with increasing Ba content indicate the phase transformation. The relative permittivity (467.74 to 26.85) and tangent loss (0.36726 to 0.24552) were reported decreasing trends at frequency of 1 kHz.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
EditorsWan Nur Azrina Binti Wan Muhammad, Mohamad Ali bin Selimin, Hasan Zuhudi bin Abdullah, Siti Aida binti Ibrahim, Zakiah Binti Kamdi, Nur Azam bin Badarulzaman, Rosniza Binti Hussin
PublisherAmerican Institute of Physics Inc.
Edition1
ISBN (Electronic)9780735448049
DOIs
Publication statusPublished - 19 Jan 2024
EventAdvanced Materials Characterization Techniques 2022, AMCT 2022 - Virtual, Online
Duration: 23 Aug 202224 Aug 2022

Publication series

NameAIP Conference Proceedings
Number1
Volume2925
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceAdvanced Materials Characterization Techniques 2022, AMCT 2022
CityVirtual, Online
Period23/08/2224/08/22

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