New high Q microwave dielectric ceramics with rock salt structures: (1-x)Li2TiO3 + xMgO system (0 <= x <= 0.5)

作者：Bian, J. J.^*; Dong, Y. F.

来源：Journal of the European Ceramic Society, 2010, 30(2): 325-330.

DOI：10.1016/j.jeurceramsoc.2009.04.030

• Rock salt structure
• Microwave dielectric properties

The structural evolution and microwave dielectric properties of (1 - x)Li2TiO3 + xMgO system (0 <= x <= 0.5) have been investigated in this paper. The ordering degree decreased with the increase of MgO content. The microcracks and cleavage on (0 0 1) due to the weak Li-O bonds disappeared with the increase of MgO content. The dielectric constant and temperature coefficient of resonant frequency decreased with the increase of MgO content. The Q x f value increased with X LIP to X = 0.2 and then decreases with the further increase of x. An excellent combined microwave dielectric properties could be obtained when x = 0.24, epsilon(r) = 19.2, Q x f = 106,226 GHz and tau(f) = 3.56 ppm/degrees C.

• 出版日期2010-1
• 单位上海大学