Low-temperature sintered Li2(MnxTi1−x)O3 microwave dielectric ceramics with adjustable τf

Abstract

B2O3–Bi2O3–SiO2–ZnO (BBSZ) glass-modified Li2(Mn[Formula: see text]Ti[Formula: see text])O3 ceramics were fabricated via a solid-state reaction route. Pure phase and dense crystal morphology were obtained at 900[Formula: see text]C. Suitable amount of Mn[Formula: see text]-ion substitution could adjust the [Formula: see text] value of the Li2(Mn[Formula: see text]Ti[Formula: see text])O3 system to near zero. Among all of the Li2(Mn[Formula: see text]Ti[Formula: see text])O3 samples, the sample with x = 0.9 (marked as BL9 in this paper) possessed good microwave dielectric properties: [Formula: see text] = 18, Q × f = 14,056 GHz (9.58 GHz) and [Formula: see text] = (+)2.43 ppm/[Formula: see text]C. It is suggested that the Li2(Mn[Formula: see text]Ti[Formula: see text])O3 ceramic with BBSZ glass is a suitable low-temperature co-fired ceramic (LTCC) candidate for microwave applications.