Sb Effect on Structural, Dielectric, and Ferroelectric Properties of Na0.5K0.5NbO3 Ceramics

被引：5

作者：

Suchanicz, J. ^{[1
]}

Konieczny, K. ^{[1
]}

Faszczowy, I. ^{[1
]}

Karpierz, M. ^{[2
]}

Lewczuk, U. ^{[2
]}

Urban, B. ^{[2
]}

Klimkowski, G. ^{[1
]}

Antonova, M. ^{[3
]}

Sternberg, A. ^{[3
]}

机构：

[1] Pedag Univ, Inst Technol, PL-30084 Krakow, Poland

[2] Pedag Univ, Inst Phys, PL-30084 Krakow, Poland

[3] Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia

来源：

FERROELECTRICS | 2015年 / 479卷 / 01期

关键词：

ferroelectric properties; dielectric properties; structural properties; Na0.5K0.5(Nb1-xSbx)O-3;

D O I：

10.1080/00150193.2015.1008375

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead-free Na0.5K0.5(Nb1-xSbx)O-3 (0<x<0.05) ceramics were fabricated by the solid-state reaction method and materials with more than 95% densification were obtained. A microstructure study confirms that the ceramics are well sintered. All compositions show complete perovskite solid solutions. Structural, dielectric and ferroelectric investigations for these specimens were performed. X-ray measurements showed that all compositions have a single perovskite structure with orthorhombic symmetry. Dielectric study revealed that the ceramics obtained are normal ferroelectrics. However some signs of diffuse phase transition were observed. The transition temperatures and the maximum electric permittivity were found to decrease and increase with increasing Sb content in the system, respectively, while ferroelectricity was enhanced significantly. A possible origin for these effects observed was discussed. The results could point to the possibility of application of Na0.5K0.5 (Nb1-xSbx)O-3 as electronic ceramics.

引用

页码：8 / 14

页数：7

共 9 条

[1] Broadband dielectric response and grain-size effect in K0.5Na0.5NbO3 ceramics [J].