Low-temperature sintered barium titanate microwave dielectric ceramic material

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The present invention relates to a low-temperature sintered barium titanate microwave dielectric ceramic material. The host matrix thereof can be represented by BaxTiyMZOX+2y+k, where x is 1˜6, y is 1˜17, z is 0˜1, k is 0˜3, M is an element substituting the Ba or Ti ion, for example selected from an alkali metal, an alkaline-earth metal, a transition group or a rare earth group, and preferably Ba2Ti9O20 or the host matrix containing Zr, Sn, Zn, etc. According to the present invention, a low melting glass is added and a subsequent milling operation is performed to reduce the sintering temperature of the microwave dielectric ceramic material to less than 1, 000° C. The low melting glass can be for example the Ba-B-Si-Li glass, Ba-B-Zn-Si-Li glass, Ba-B-Si-Li-Cu glass or Cu-B-Zn-Si-Li glass.