Microwave Dielectric Properties of AZn2(PO4)2 (A = Sr, Ba) Ceramics. (19th February 2016)

• Record Type: Journal Article
• Authors: Guo, Teng; Li, Yongxiang; Wahyudi, Olivia; Chen, Shifu; Wang, Xuchun; Chen, Junhua
• Is Part Of: Ferroelectrics. Volume 492(2016)
• Page Start: 91
• Page End: 102
• Publication Date: 2016-02-19
• Subjects: SrZn2(PO4)2 -- BaZn2(PO4)2 -- microwave dielectric properties -- ceramic substrates; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2015.1070247
• Languages: English
• ISSNs: 0015-0193

Abstract

Abstract : Crystal structures, microstructure and microwave dielectric properties were investigated for dense ceramics with single phase of AZn2 (PO4 )2 (A = Sr, Ba). It was found that crystal structures with large difference can be obtained in SrZn2 (PO4 )2 and BaZn2 (PO4 )2, which leads distinct variation of sintering and microwave dielectric properties, in which SrZn2 (PO4 )2 ceramics has ϵ = 6.29, Q × f = 21600 GHz (10.9 GHz) and τf = − 70.4 ppm/°C when sintering temperature was 940°C, and can be co-fired with copper electrode in N2 atmosphere; while the BaZn2 (PO4 )2 ceramics could be sintered at a relative higher temperature, 1000°C but higher τf value was obtained, with microwave dielectric properties as ϵ = 7.72, Q × f = 17000 GHz (9.9 GHz) and τf = − 41.1 ppm/°C.