Dielectric properties of powder-sol-derived strontium barium niobate/strontium barium titanate composite ceramics. (2nd January 2018)

• Record Type: Journal Article
• Authors: Wang, Fengchun; Wu, Ze; Shan, Lianwei; Dong, Limin; Zhang, Xianyou
• Is Part Of: Ferroelectrics. Volume 522(2018)
• Page Start: 144
• Page End: 151
• Publication Date: 2018-01-02
• Subjects: Peroviskite phase -- tetragonal tungsten bronze phase -- composite ceramics; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2018.1392781
• Languages: English
• ISSNs: 0015-0193

Abstract

ABSTRACT: In this paper, strontium barium niobate/strontium barium titanate [Srx Ba1-x Nb2 O6 /Srx Ba1-x TiO3 ] composite ceramics with different Sr 2+ /Ba 2+ ratio were fabricated using a Powder-Sol (P-S) method. The formation process of SBN/SBT was studied by TG-DTA. It is found that the tetragonal tungsten bronze (TTB) phase and perovskite phase were co-present in the composite ceramics, and the Sr 2+ /Ba 2+ ratio has an influence on the proportion between SBN and SBT. SEM results show that samples are homogeneous and fine-grained. The dielectric properties of composite ceramics were studied by impedance analyzer, and indicates that the dielectric constant and dielectric loss could be well regulated by Sr 2+ /Ba 2+ ratio.