The dielectric coefficient is nearly 42, the maximum of Qf is 14000, which was obtained at the specimen while x=0.008 and resonat frequency at 5GHz in N2 atmosphere.

• 微波段的介电常数在42左右，在x=0.；008时，谐振频率在5GHz左右，氮气气氛下制备样品获得了最大为14000的Qf值。