TY - JOUR ID - 16163 TI - Effect of Dy<sup>3+</sup> substitution on microwave behaviour of nanocrystalline Mn-Zn Ferrite JO - Advanced Materials Proceedings JA - AMP LA - en SN - 2002-4428 AU - Neelima, P. AU - Murthy, S. R. AD - Department of Physics, Osmania University, Hyderabad 500 007, India. AD - Department of Physics, Osmania University, Hyderabad 500 007, India. Geethanjali college of Engineering and Technology, Cheeryal, Hyderabad 501301 Y1 - 2018 PY - 2018 VL - 3 IS - 7 SP - 464 EP - 468 KW - Spinel ferrite KW - microwave hydrothermal method KW - doping KW - complex permittivity KW - complex permeability KW - microwave absorption properties DO - 10.5185/amp.2018/6681 N2 - Microwave-hydrothermal (M-H) method had been employed to synthesize a series of Dy3+doped Mn-Zn ferrite Mn0.6Zn0.4Fe2&ndash;xDyxO4 (x=0, 0.01, 0.03, 0.05, 0.07, 0.09) nanopowders at 160&deg;C/30 min. The prepared samples have been characterized by Fourier Transform Infrared Spectrometer. The grain size of sintered ferrites are in the range of 60-70 nm. Decrease in saturation magnetization and increase in coercivity were observed with an increase of Dy3+ concentration in Mn-Zn ferrites. The complex permeability and complex permittivity of the prepared samples were measured in the frequency range of 2&ndash;18 GHz using a using a vector network analyzer. It is observed that small variation of Dy3+ substitution in spinel ferrite tailored microwave absorbing parameters dramatically. The reflection loss (RL) increased with the Dy3+ content upto x &le; 0.03. The sample with x=0.03 of thickness 2.3 mm showed minimum reflection loss of -20.5 dB with a bandwidth of 3.8 GHz. Thus the present materials exhibit good microwave absorption properties and hence can act as EMI suppressors. Copyright &copy; 2018 VBRI Press. UR - https://amp.iaamonline.org/article_16163.html L1 - https://amp.iaamonline.org/article_16163_6923ab92dd3f934e22ee6a7c2eba77cf.pdf ER -