Effect of BaCu(B2O5) on the sintering and microwave dielectric properties of Ca0.4Li0.3Sm0.05Nd0.25TiO3 ceramics. Issue 15 (December 2017)

• Record Type: Journal Article
• Authors: Gu, Yong-jun; Li, Chao; Huang, Jin-liang; Li, Qian; Li, Li-hua; Li, Xin-li
• Is Part Of: Journal of the European Ceramic Society. Volume 37:Issue 15(2017)
• Page Start: 4673
• Page End: 4679
• Publication Date: 2017-12
• Subjects: Dielectric properties -- Perovskites -- Sintering -- BaCu(B2O5); Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2017.06.038
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: The sintering behaviors and microwave dielectric properties of the Ca0.4 Li0.3 Sm0.05 Nd0.25 TiO3 (abbreviated CLSNT) ceramics with different amounts of BaCu(B2 O5 ) addition were investigated in this paper. Adding BaCu(B2 O5 ) to CLSNT lowered its sintering temperature from 1300 °C to 925 °C. No secondary phase was observed in the CLSNT ceramics and complete solid solution of the complex perovskite phase was confirmed. The CLSNT ceramics with small amounts of BaCu(B2 O5 ) addition could be well sintered at 925 °C without much degradation in the microwave dielectric properties. Especially, the 1.75 wt.% BaCu(B2 O5 )-doped CLSNT ceramic sample sintered at 925 °C for 3 h had optimum microwave dielectric properties of εr = 93.5 ± 3.2, Q × f = 6486 ± 434 GHz, and τ f = 5 ± 1.5 ppm/°C (at 3–4 GHz), enabling it a promising candidate material for LTCC applications. Obviously, BaCu(B2 O5 ) could be a suitable sintering aid to facilitate the densification and microwave dielectric properties of the CLSNT ceramics.