Dielectric behaviour of nanocrystalline Ni-Zn ferrites prepared by oxalate co-precipitation method
Nickel-zinc ferrites with chemical formula Ni1-xZnxFe2O4 (x =0,0.2,0.4,0.6,0.8 and 1.0) were prepared by oxalate co-precipitation method.The dielectric constant (ε) dielectric loss (tanδ) and AC conductivity (σac) of all the samples were determined at room temperature in the frequency range 20Hz-1MHz.The dielectric constant and dielectric loss are much smaller than those for samples prepared by ceramic method.The dielectric behaviour is attributed to the Maxwell-Wagner type interfacial polarization.AC conductivity of all the samples lies in the range 1.20×l0-8 to 54.7x10-8 Ω-1cm-1.Low dielectric loss and high resistivity suggest the suitability of these ferrites for high frequency applications.
Ni-Zn ferrites Nanostructure dielectric constant dielectric loss AC conductivity
Tukaram J.Shinde Ashok B.Gadkari Pramod N.Vasambekar
Department of Physics, Smt.K R P Kanya Mahavidyalaya, Islampur-415 409, India Department of Physics, G K G College, Kolhapur-41 6012, India Department of Electronics, Shivaji University, Kolhapur-416 004, India
国际会议
太原
英文
56-59
2013-01-13（万方平台首次上网日期，不代表论文的发表时间）