研究低温晶体生长对无铅BCT-BZT陶瓷结构和铁电性能的影响

IF 1.3 4区 物理与天体物理 Q4 PHYSICS, CONDENSED MATTER Ferroelectrics Letters Section Pub Date : 2020-03-26 DOI:10.1080/07315171.2020.1810985
S. Thakur, Mamta Shandilya, M. Graça, M. Valente
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引用次数: 6

摘要

锆钛酸钡-钛酸钡钙(BCT-BZT)是一种无铅体系,具有类似于铅基钙钛矿材料的铁电性能。在本研究中,我们采用水热法在150℃下合成了x(Ba0.85Ca0.15)TiO3-(1−x)Ba(Zr0.15Ti0.85)O3(其中x = 0.4, 0.5, 0.6)单音粉末。x射线衍射显示为纯四方相。扫描电子显微镜(SEM)研究表明,由于温度较低,晶体生长均匀,陶瓷具有高密度和多晶性。单个半圆表示批量行为。体积电阻随温度的升高而减小,表现出典型的半导体性质,负温度电阻系数(NTCR)行为。
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To study the effect of low temperature crystal growth on the structural and ferroelectric properties of lead-free BCT-BZT ceramic
Abstract 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)O3 (where x = 0.4, 0.5, 0.6) monophonic powders by hydrothermal method at 150 °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.
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来源期刊
Ferroelectrics Letters Section
Ferroelectrics Letters Section 物理-物理:凝聚态物理
CiteScore
1.10
自引率
0.00%
发文量
1
审稿时长
4.8 months
期刊介绍: Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.
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