To study the effect of low temperature crystal growth on the structural and ferroelectric properties of lead-free BCT-BZT ceramic

被引：9

作者：

Thakur, Shweta ^{[1
]}

Shandilya, Mamta ^{[2
]}

Graca, Manuel Pedro Fernanades ^{[3
]}

Valente, Manuel Almeida ^{[3
]}

机构：

[1] Eternal Univ, Akal Coll Basic Sci, Dept Phys, Sirmour, HP, India

[2] Shoolini Univ, Sch Phys, Solan, HP, India

[3] Univ Aveiro, Dept Phys, I3N Aveiro, Aveiro, Portugal

来源：

FERROELECTRICS LETTERS SECTION | 2020年 / 47卷 / 4-6期

关键词：

BCT-BZT; dielectric properties; ferroelectricity; impedance spectroscopy;

D O I：

10.1080/07315171.2020.1810985

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Barium Zirconate Titanate-Barium Calcium Titanate (BCT-BZT) is one of the lead-free systems, which exhibits remarkable ferroelectric properties akin to lead-based perovskite materials. In this study, we have synthesized x(Ba0.85Ca0.15)TiO3-(1-x)Ba(Zr0.15Ti0.85)O-3 (where x = 0.4, 0.5, 0.6) monophonic powders by hydrothermal method at 150 degrees C. X-ray diffraction reveals the pure tetragonal phase. Scanning electron microscopy (SEM) studies make known that the crystal growth is uniform due to low temperature, and that the ceramics are highly dense and polycrystalline. The single semicircle indicates bulk behavior. The bulk resistance decreases with the increase in temperature showing a typical semiconducting property, negative temperature coefficient of resistance (NTCR) behavior.

引用

页码：76 / 89

页数：14

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