Abstract
Phase evolution, densification, and dielectric properties of MgTi 2O 5 dielectric ceramic, sintered with lithium borosilicate (LBS) glass, were studied. Reaction between LBS glass and MgTi 2O 5 was significant in forming secondary phases such as TiO 2 and (Mg,Ti) 2(BO 3)O. The glass addition was not necessarily deleterious to the dielectric properties due to the formation of TiO 2: permittivity increased and temperature coefficient of resonance frequency could be tuned to zero with the addition of LBS glass, although the inevitable glass-induced decrease of quality factor was not retarded by the formation of TiO 2. The sintered specimen with 10 wt% LBS fired at 950 °C for 2 h showed permittivity of 19.3, quality factor of 6800 GHz, and τ f of −16 ppm/°C.
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