The novel nano ceramic magnesium ferrite material doped with double lanthanide i.e., Samarium (Sm) and Dysprosium (Dy) showed the n-type semiconductor, was synthesized by sol-gel technique and sintered in a microwave furnace in order to enhance the electrical and magnetic behavior of this material as per the requirement of Microstrip patch antenna. The structural, surface morphological and chemical compositional properties of this material were investigated by X-ray diffraction (XRD), SEM and E-DAX. E-DAX was used for the quantification of elements (Mg, Dy, Sm and Fe) near the detection limit. XRD and SEM were used for estimation and conformation of nano size of the ceramic ferrite material. The studies of other parameters such as porosity, anisotropy constant, initial permeability, saturation magnetization, DC resistivity, dielectric constant and dissipation loss as a function of Dy-Sm doping concentration and frequency were performed. It was seen that permeability, saturation magnetization, dielectric constant and dissipation loss were found to increase, while DC resistivity was found to decrease with the doping of Dy, Sm ions. The desired properties with extremely low permittivity and low relative loss factor along with an improved DC resistivity was obtained to design and for the studies of a suitable Eshaped micro strip patch antenna(MSPA). Table 1 Chemical Composition of the Dy-Sm Magnesium ferrite with stoichiometric iron MgDy x Sm y Fe 2-x-y O 4Mg(NO 3 ) 2 Dy(NO 3 ) 3 Sm(NO 3 ) 2 Fe(NO 3 ) 3

ABSTRACT:In this paper we have introduced Mg Sm x Fe 2-x O 4 coated on RT DUROID5880 as substrate for an effective constituent to have a patch antenna. Here Mg Sm x Fe 2-x O 4 of different thickness was coated over RT DUROID 5880 with dielectric constant of 2.2 and loss tangent of 0.0004. This combination forms a new substrate for E shaped micro strip patch antenna design. It was found that the dielectric constant was reduced to 1.12 and loss tangent to 0.00046. The thickness value of the combination was kept 15 mile, 13 mile, 12 mile, 11 mile and 10 mile. The simulation was performed using IE3D simulator for a frequency range of 5 GHz to 15 GHz. The Return loss was 21.5322 dB, VSWR value was 1.18306, the Directivity came to be 8.37864 dBi, the Gain was 11.6778dBi. The Efficiency came to be 98%, these simulated results were encouraging.

Nano-particles of polycrystalline Zn Fe 2 O 4 are prepared using sol-gel method with Ni, and Sm. They are obtained as dried gel after the successful chemical reaction of their respective metal nitrate solutions in the midst of citric acid as catalyst. Synthesis of materials is confirmed using XRD from the report of single phase polycrystalline ferrite material. The magnetic properties of Zn-ferrite ceramics Zn 1-x-y Ni y Sm x Fe 2 O 4 , (where x = 0.01, 0.012, 0.014, 0.016, y=0.001) were synthesized by sol gel auto combustion method. The structure and composition of Sm doped Zn-ferrite ceramics were analyzed and the nano size was confirmed by the SEM monographs. The VSM studies confirm the magnetic behaviour by analyzing the change in magnetic saturation and coercivity of these nano materials.

Nano-particles of polycrystalline Zn Fe 2 O 4 doped with, Ni and Ce (Zn Ni y Ce x Fe 2-x-y O 4 , where x =0.01, 0.012, 0.014, 0.016, y=0.003) was prepared by sol-gel auto combustion route. The microwave sintered ferrite was characterized and the nano size was confirmed by XRD and the SEM monographs. The EDAX studies confirm the composition of Ni, Ce doped Zn-ferrites and VSM studies show the behaviour of coercivity and Saturation magnetization. The permittivity increased with the increase in Ni-Ce doping concentration.

The Praseodymium, Samarium doped novel Magnesium ferrite (Mg Pr x Sm y Fe 2-x-y O 4 ) was prepared by sol gel route and sintered in a microwave furnace. The nano size, structure and composition of Pr and Sm doped Magnesium ferrite ceramics was analyzed by X-ray diffraction and confirmed by SEM monographs. The elemental conformation was done by EDAX. The hysteresis property of this material was conformed through its hysteresis curves. The permeability of this material was calculated by using the magnetic saturation obtained from the hysteresis curves.The electrical measurements have been performed to determine the dielectric constant ( r ), dielectric loss ( r ) and loss tangent in the frequency range of 20KHz -20MHz. It is also found that the permittivity of these nano materials is being reduced with the increase in frequency.