Abstract. GdFeO 3 and GdZn 0.3 Fe 0.7 O 3 ceramics were prepared by standard Solid State Reaction method at 1200 0 c. The structural changes and crystallite sizes of the undoped and Zn doped ceramics were studied using the XRD data. Microstructural features and elemental composition of GdFeO 3 and GdZn 0.3 Fe 0.7 O 3 ceramics were determined from SEM and EDS analysis. Room temperature dielectric measurements such as dielectric constant (ε′), tangent loss (tanδ) and AC conductivity (σ ac ) were carried out in the frequency range (100Hz to 1MHz). Improved dielectric properties of GdZn 0.3 Fe 0.7 O 3 over GdFeO 3 ceramics with low values of dielectric loss render them as potential materials in the areas of microwave communication systems, information storage, spintronics, sensors, etc.

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