A NEW MICROWAVE DIELECTRIC CERAMICS BASED ON THE SOLID-SOLUTION SYSTEM BETWEEN BA(ZN1 3NB2/3)O-3 AND BA(ZN1/3NB2/3)O-3/

Microwave dielectric properties of the solid solution between Ba(Ni1/3 Nb2/3)O-3 and Ba(Zn1/3Nb2/3)O-3 were investigated. Samples were prepar ed by the conventional mixed oxide method as well as the Pechini metho d. Sintered samples were analyzed using x-ray diffraction and scanning electron microscopy, and their microwave dielectric properties were m easured by the post resonator method. The sample prepared by the Pechi ni method revealed excellent dielectric properties, i.e., permittivity of 35.6, quality factor of 5700 at 10 GHz, and very small temperature coefficient of resonant frequency. Order-disorder behavior of this so lid solution system was found to depend on processing parameters. Vari ation in microwave dielectric properties was discussed in terms of the order-disorder behavior, chemical composition, mixture rule, etc.