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Article – Journal of Nanoscience and Technology

Journal of Nanoscience and Technology, Volume 1,Issue 1,2015 Pages 26-31

Synthesis and Analysis of Nanocrystalline Fe2Mn2Ni0.5Zn1.5O9 at Different Treating Temperatures
S.N. Anitha, I. Jayakumari*

After the discovery of high temperature superconductivity a tremendous change occurred in the crystalline study of nano ceramics. Nanocrystalline ceramics Fe2Mn2Ni0.5Zn1.5O9 is prepared from a suitable combination of ferrous oxide, manganese oxide, nickel oxide and zinc oxide. These materials are expected to play an important role in the area of microelectronics, especially for magnetic field sensors, optical detectors, Josephson junctions and interconnects in integrated circuits. In this work, the authors designed a new nano crystalline ceramic type II High-TC superconductor, ferromanganese nickel zinc oxide (Fe2Mn2Ni0.5Zn1.5O9). The sample Fe2Mn2Ni0.5Zn1.5Owas prepared by the solid state thermo chemical reaction technique including mixing, milling, calcination and sintering. In order to show the viability of the proposed method, super-conducting powder was prepared in a special furnace. The synthesized material was characterized using XRD, FTIR, SEM and EDAX techniques. Using scanning electron microscopy (SEM) the morphology of the synthesized crystals was scrutinized. The XRD analysis has shown that the synthesized crystal has possessed orthorhombic structure. The X-Ray Diffraction (XRD) analyser is, an indispensable non-destructive tool for structural material characterization and quality control which makes use of the Debye-Scherrer method. The orthorhombic structure of the sample was confirmed by the comparison of XRD results with JCPDS file and applying XPERT-PRO software. X-ray instrumental peak broadening analysis was used to evaluate the crystalline sizes and lattice strain on the peak broadening by the Williamson-Hall Plot method. The Scanning Electron (SEM) micrograph depicts the presence of fine crystallites with assorted morphology which revealed that its particle size is in the nano meter range. And it was confirmed by the calculated value of particle size from Debye Scherrer’s formula. From the EDX plot the presence of all the constituents were confirmed. Dislocation density (δ) is also calculated.

Keywords: Fe2Mn2Ni0.5Zn1.5O9, SEM; Debye Scherrer; Williamson-Hall; Dislocation Density; EDAX;