In the present work, the chemical co-precipitation method has successfully been employed in the preparation of GdFeO 3 nanoparticles. Prepared samples have been sintered at different temperatures in order to investigate their structural changes using XRD, SEM, and FTIR. P-E hysteresis loops have been measured at various sintering temperatures to understand the grain size effects on ferroelectric properties. From the XRD profile, we have optimized the sintering temperature by comparing this data with JCPDS data. For the temperature optimized sample, we have measured M-H hysteresis loops at 20 K and 300 K to understand its magnetic properties and also dielectric properties, which were measured from room temperatures to 600 • C as function of frequency. The present work has been undertaken to determine their suitability for further development as multifunctional materials.

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Present work reports on the synthesis of Co 2+ , Ni 2+ and Cu 2+ ions doped willemite α-Zn 2 SiO 4 nanoceramic sol-gel powders. The structural and morphological of these materials were carried out using XRD, Raman and field emission scanning electron microscopy (FESEM), and elemental analysis by EDAX. Both XRD and EDAX results have thus corroborated the doping of Co 2+ , Ni 2+ and Cu 2+ ions in Zn 2 SiO 4 matrix. The dielectric constant (ε ), dielectric loss (ε ), and AC conductivity (σ ac ) properties have been studied as a function of frequency and temperature as well and those results are found to be strongly dependent on dopant ions such trends have successfully been explained based on space charge polarization way following according the standard procedures of Maxwell-Wagner two-layer model.

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