Synthesis and Electrical Characterization of 0.8(K,Na)NbO3-0.2(Ba,Ca)(Zr,Ti)O3 Lead-Free Ceramics

Nur Amaliya Rohmah; Nahariatul Hikmah; Suasmoro Suasmoro

doi:10.4028/www.scientific.net/AMR.1112.15

Paper Titles

Preface

Optical Band Transitions and Excitonic States in ZnO:Cu Films
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Optical Properties of Erbium Doped Borotellurite Glass System
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Characterization of Mg_0.8Zn_0.2TiO₃ Prepared via Liquid Phase Sintering
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Synthesis and Electrical Characterization of 0.8(K,Na)NbO₃-0.2(Ba,Ca)(Zr,Ti)O₃ Lead-Free Ceramics
p.15

Crystal Structure and Magnetic Properties of Zn Doped Barium M-Hexaferrite
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Raman Spectra of Multiferroics TbMnO₃
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Structure and Magnetic Properties of Spark Plasma Sintered NdFeB
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The Influence of Glucose Concentration to Resonant Wavelength Shift of Polymer-Based Microring Resonators
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1112Synthesis and Electrical Characterization of...

Synthesis and Electrical Characterization of 0.8(K,Na)NbO₃-0.2(Ba,Ca)(Zr,Ti)O₃ Lead-Free Ceramics

Abstract:

In this research, the physical and electrical properties of 0.8K_0.5Na_0.5NbO₃-0.2Ba_0.5Ca_0.5Zr_0.5Ti_0.5O₃ (0.8KNN-0.2BCZT) were characterized. Lead-free material, 0.8KNN-0.2BCZT with and without alkaline excess was synthesized via solid state reaction method. KNN and BCZT were calcined at 700°C and 1200°C for 2 hours respectively and mixed by planetary milling. The mixed powder was recalcined at 1250°C for an hour then sintered at 1150°C, 1200°C and 1250°C for 2 and 4 hours. XRD analysis of 0.8KNN-0.2BCZT for excessive (8% Na, 2% K) sample sintered at 1150°C for 4 hours has single phase showing ABO₃ structure (A=K, Na, Ba, Ca and B=Ti, Zr, Nb) and multi phases for the other ones. The microstructure analysis (SEM) showed cubic-like grain shape in which excessive sample possessed greater average grain size than other. Dielectric properties and Curie temperature of single phase sample in this research were higher than those of pure KNN. The conductivity analysis reveals two regimes. The first regime (<300°C) showed no significant role of BCZT in KNN and the second one (>300°C) showed that BCZT increased conductivity of KNN and factor dissipation as well.

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Advanced Materials Research (Volume 1112)

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15-18

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https://doi.org/10.4028/www.scientific.net/AMR.1112.15

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July 2015

Authors:

Nur Amaliya Rohmah*, Nahariatul Hikmah, Suasmoro Suasmoro

Keywords:

Dielectric, Lead-Free, Perovskite

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