A facile preparation of temperature-stable borate ultra-low permittivity microwave ceramics for LTCC applications. Issue 11 (1st August 2020)

• Record Type: Journal Article
• Authors: Xi, Juan; Shang, Fei; Liu, Fei; Xu, Jiwen; Chen, Guohua
• Is Part Of: Ceramics international. Volume 46:Issue 11(2020)Part B
• Page Start: 19650
• Page End: 19653
• Publication Date: 2020-08-01
• Subjects: Ceramic -- LTCC -- Dielectric properties; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.04.301
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: An ultra-low permittivity Li2 O-added CuO-ZnO-B2 O3 multiphase ceramic was fabricated by means of sintering technique, and the phase compositions, microstructures and dielectric properties were investigated. Specimens can be sintered below 800 °C. All the sintered samples consist of Zn(BO2 )2 and CuB2 O4 . The variations in the microstructure and dielectric properties of borate ceramics samples were relied on the sintering temperature. The ceramic sintered at 785 °C for 2 h exhibits excellent dielectric properties of ϵr = 2.86, Q × f = 38093 GHz (~16.0 GHz), τƒ = -2.17 ppm/°C, which indicates that the ceramic is a promising candidate for LTCC applications.