DIELECTRIC PROPERTIES OF LEAD-FREE [(1-x)(Na_0.5Bi_0.5)-xBa]Zr_1−yTi_yO₃ CERAMICS (x = 0.01, 0.06, 0.085, 0.09, 0.1 AND y = 0.96, 0.97)

J. SUCHANICZ Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30–084, Krakow, Poland

G. STOPA Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30–084, Krakow, Poland

M. ANTONOVA Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063, Riga, Latvia

A. KALVANE Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063, Riga, Latvia

M. DAMBEKALNE Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063, Riga, Latvia

A. STERNBERG Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063, Riga, Latvia

I. JANKOWSKA-SUMARA Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30–084, Krakow, Poland

W. SMIGA Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30–084, Krakow, Poland

T. GLOS Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30–084, Krakow, Poland

D. WCISŁO Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30–084, Krakow, Poland

K. KONIECZNY Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30–084, Krakow, Poland

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ABSTRACT

Lead-free ceramics based on (Na_0.5Bi_0.5TiO₃, NBT)-(Ba(Ti, Zr)O₃, BTZ) were prepared by solid phase synthesis and hot pressing sintering process and their dielectric properties have been studied. The obtained results were compared with these for pure NBT. The obtained samples show pure perovskite structure. Low frequency (100 Hz-100 kHz) investigations reveal the diffuse phase transitions and relaxorlike behaviour. The obtained results are discussed in terms of inhomogeneity of ions distribution, their ferro- and antiferroactivity and internal stresses. The NBT-BTZ system is expected to be a new promising candidate for lead-free electronic ceramics.

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DIELECTRIC PROPERTIES OF LEAD-FREE [(1-x)(Na_0.5Bi_0.5)-xBa]Zr_1−yTi_yO₃ CERAMICS (x = 0.01, 0.06, 0.085, 0.09, 0.1 AND y = 0.96, 0.97)

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DIELECTRIC PROPERTIES OF LEAD-FREE [(1-x)(Na0.5Bi0.5)-xBa]Zr1−yTiyO3 CERAMICS (x = 0.01, 0.06, 0.085, 0.09, 0.1 AND y = 0.96, 0.97)

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DIELECTRIC PROPERTIES OF LEAD-FREE [(1-x)(Na_0.5Bi_0.5)-xBa]Zr_1−yTi_yO₃ CERAMICS (x = 0.01, 0.06, 0.085, 0.09, 0.1 AND y = 0.96, 0.97)