Composition‐dependent microstructure and electrical property of (1−x)SBN‐xBNBT solid solutions. Issue 12 (31st August 2020)

• Record Type: Journal Article
• Authors: He, Xiao‐Juan; Xie, Zhong‐Shuai; Yuan, Xin; Li, Ling; Huang, Da‐Fang; Tao, Chun‐Wei; Wang, Rui‐Xue; Hao, Jigong; Yuan, Guoliang; Zhang, Shan‐Tao
• Is Part Of: Journal of the American Ceramic Society. Volume 103:Issue 12(2020)
• Page Start: 6913
• Page End: 6921
• Publication Date: 2020-08-31
• Subjects: microstructure -- perovskite -- relaxor ferroelectrics -- solid solution -- tungsten bronze; Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.17424
• Languages: English
• ISSNs: 0002-7820

Abstract

Abstract: In this study, (1− x )Sr0.75 Ba0.25 Nb2 O6 ‐ x [0.94Bi0.5 Na0.5 TiO3 ‐0.06BaTiO3 ] solid solution ceramics were prepared and investigated. The length‐diameter ratio of pillar‐like grain increased with increase in x, reaching maximum value of 10.5 at average length of 1.36 μm and diameter of 0.13 μm for x = 0.20. The maximum dielectric constant, temperature corresponding to the maximum dielectric constant, and saturated polarization decreased, respectively, from 507, 36°C, and 3.2 μC/cm 2 for x = 0 to 365, −61°C, and 2.0 μC/cm 2 fort x = 0.10, and then increased to 1167, 43°C, and 5.5 μC/cm 2 for x = 0.20. These results indicate the competitive effects of B‐site Ti 4+ and A‐site Ba 2+ on ferroelectricity.