Sintering behavior and microwave dielectric characteristics of ZnTiNb2O8 ceramics achieved by reaction sintering of ZnO–TiO2–Nb2O5 nanosized powders. Issue 2 (1st February 2016)

• Record Type: Journal Article
• Authors: Bafrooei, H. Barzegar; Nassaj, E. Taheri; Ebadzadeh, T.; Hu, C.F.; Sayyadi-Shahraki, A.; Kolodiazhnyi, T.
• Is Part Of: Ceramics international. Volume 42:Issue 2:Part B(2016)
• Page Start: 3296
• Page End: 3303
• Publication Date: 2016-02-01
• Subjects: Reaction sintering -- Microwave dielectric ceramic -- ZnTiNb2O8; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.10.121
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Sintering behavior, microstructure and microwave dielectric properties of ZnTiNb2 O8 (ZTN) ceramics prepared by reaction-sintering method were investigated. The prepared ceramic samples were characterized by field emission scanning electron microscopy, X-ray diffraction, and microwave dielectric measurements. All samples prepared at sintering temperatures ranging from 1025 to 1125 °C exhibit a single ixiolite phase and their relative densities range from ~86.5 % to ~99 %. The variation trend of permittivity and Q × f value was in accordance with variation trend of relative density. Pure ixiolite ZTN ceramic sintered at 1075 °C for 5 h exhibits good microwave dielectric properties with a permittivity about 36.7, Q × f value about 54, 000 GHz, and temperature coefficient of resonant frequency about −70.4 ppm/°C. The obtained results demonstrated that the reaction-sintering process is a simple and effective method to prepare the ZnTiNb2 O8 ceramics for passive microwave dielectric devises.