Effect of sintering temperature on the dielectric, ferroelectric and energy storage properties of SnO2-doped Bi0.5(Na0.8K0.2)0.5TiO3 lead-free ceramics

被引：26

作者：

Nguyen Truong-Tho ^{[1
]}

Le Dai Vuong ^{[2
]}

机构：

[1] Hue Univ, Dept Phys, Coll Sci, Hue City, Vietnam

[2] Thu Dau Mot Univ, Fac Nat Sci, Thu Dau Mot City, Binh Duong Prov, Vietnam

来源：

JOURNAL OF ADVANCED DIELECTRICS | 2020年 / 10卷 / 04期

关键词：

Lead-free ceramics; BNKT; sintering temperature; dielectric constant; FIELD-INDUCED STRAIN; FREE PIEZOELECTRIC CERAMICS; ELECTRICAL-PROPERTIES; DEPOLARIZATION TEMPERATURE; PHASE-STRUCTURE; BEHAVIOR; MICROSTRUCTURE; DENSITY; ZNO;

D O I：

10.1142/S2010135X20500113

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Sintered lead-free Bi-0.5(Na0.8K0.2)(0.5)(Ti(0.96)Sn(0.0)4)O-3 ceramics (BNKTS) have been fabricated via a solid-state reaction. The effect of sintering temperature on the structural, morphological, dielectric, ferroelectric and energy storage properties of BNKTS ceramics was investigated, and it was found that the electrical properties of the synthesized ceramics increased with the increase in the sintering temperature, and the highest values were achieved at 1100 degrees C. The ceramics sintered at the optimized temperature of 1100 degrees C exhibited the best physical, dielectric, ferroelectric and energy storage properties, namely, high density (the relative density, rho = 5.88 g.cm(-3), approximate to 96.7% of the theoretical value), high densification factor (DF = 0.93), high dielectric constant (epsilon(r) = 1215), low dielectric loss (tan delta = 0.051), highest dielectric constant (epsilon(max) = 4335), high remanent polarization (P-r = 9.5 mu C. cm(-2)), high coercive field (E-c = 14.3 kV/cm), high energy storage density (0.12 J/cm(3)), and high energy storage efficiency (41.7% at 46.3 kV/cm).

引用

页数：9

共 52 条

[1] Effect of sintering temperature on structural, electrical, and ferroelectric properties of lanthanum and sodium co-substituted barium titanate ceramics [J].