A new high-Q×f Li4NbO4F microwave dielectric ceramic for LTCC applications. Issue 3 (1st February 2021)

• Record Type: Journal Article
• Authors: Chu, Xin; Jiang, Juan; Wang, Jinzhao; Wu, Yuanchuang; Gan, Lin; Zhang, Tianjin
• Is Part Of: Ceramics international. Volume 47:Issue 3(2021)
• Page Start: 4344
• Page End: 4351
• Publication Date: 2021-02-01
• Subjects: Rock salt -- Microwave dielectric properties -- LTCC; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.09.280
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A novel microwave dielectric ceramic material, Li4 NbO4 F, was fabricated by the solid-state reaction method. The microwave dielectric properties, sintering characteristics, and crystal structures of the Li4 NbO4 F ceramic samples were investigated. It was found that the Li4 NbO4 F ceramic samples can be successfully sintered at low temperatures (e.g., 750–875 °C). The samples exhibited a single cubic rock salt phase and possessed homogenous microstructures and outstanding microwave dielectric properties. The optimal properties of Q × f = 61111 GHz, ε r = 15.2, and τ ƒ = −51 ppm/°C were achieved in the ceramic sample sintered at 825 °C. Additionally, the ceramic samples showed superior compatibility with Ag, indicating that Li4 NbO4 F is a promising low-temperature co-fired ceramic (LTCC) material.