Preparation and Characterization of PPY/BaFe (12−x) Ti x O 19 Nanocomposite Aparna. A. R 1 1 Department of Nanoscience &Technology, JNTUH, India, Dr. Brahmajirao.V 2 2 Department of Nanoscience and Technology, GVPCE (Autonomous), Madhurawada, Visakhapatnam, India Dr. Kartikeyan.T.V 3 3 Department of Mechanical Engineerng, ASL, India Email: Abstract— The preparation of hybrid composite in two stages is being presented in this paper. There are two stages of synthesis. In first stage, Ti-doped barium ferrite powders BaFe(12−x)TixO19 (for x = 0.33 and 0.37 ) nanomaterial using sol-gel route were synthesized. In second stage, Ti-doped barium ferrite powders BaFe(12−x)TixO19 nanomaterial synthesized in the first stage is incorporated into the Polypyrrole through solution processing method. The phase structure and morphology were analyzed by standard XRD, SEM, EDS and FTIR techniques.TEM and SAED were done on Nanocomposite samples to know the dispersion of PPY with BFTO nanopowder. Scifinder software couldn’t trace any earlier communication involving this nanomaterial in literature. Keywords— Barium ferrite, sol-gel route, Titanium, Nano ferrite, impregnation technique) I. INTRODUCTION Barium ferrite (BaFe12O19) is a permanent magnetic material, a ferrimagnetic material better chemical stability, High saturation magnetization, great coercivity and it is a low cost material. It has a very wide range of application,very useful in Microwave communication, useful in microwave dark room, absorber for electromagnetic wave radiation (microwave absorbing materials reduce the human exposure to microwaves by means of absorbing coatings ) [1-3] Barium ferrite has hexagonal structure. It belongs to magneto-plumbite ceramic oxide group and can be classified as hard magnetic material. It is one of a ferromagnetic oxide that has both dielectric and magnetic properties when applied with high frequency (microwave region), hence is ideal for microwave applications. The Fe 3+ ions occupy the sub lattice at different sites that lead to different magnetic properties and change its sub lattice and magnetic properties on addition of nonmagnetic materials [4-6]. Ti-doped barium hexaferrite (Ti-doped BHF) powder is an efficient absorber of electromagnetic waves in the microwave spectrum increase in the saturation magnetization (MS) and a decrease in the coercivity (JHC) are required for optimization of the absorption. These properties depend on the localization of the Ti4+ in the barium hexaferrite structure. The Ti4+ ions preferentially occupy the octahedral 4f2 sites of the BHF structure when the Ti-doped BHF is synthesized using the sol-gel route, especially at low doping rates. Also Since the magnetic moment of the Ti4+ ions is zero and the spin direction of 4f2 site in the BHF structure is down. MS must increase with the doping concentration of titanium, while HC must decrease, which corresponds our expectations of lower magnetocrystalline anisotropy. However with higher doping rates of Ti4+, MS decreases , because Ti4+ ions could be located also in other lattice sites[7-12]. Both polyaniline (PANI) and polypyrrole (PPy) are Probably the most widely studied conducting polymers due to their good stability in air, high conductivity, and reversible process between oxidation and reduction state. Polypyrrole can be dispersed into metallic fillers like Ferrites by easy methods [13-25]. II. EXPERIMENTAL METHOD Ti doped barium ferrite was prepared by Sol-Gel method. BaFe11.67Ti0.33O19 and BaFe11.63Ti0.37O19 at 950 0 C.The synthesis of Nanoferrite composites was done by Impregnation Technique. The Nanoparticle impregnation process involves dissolving an appropriate metallic precursor in an polymer and then exposing the substrate to the solution. And reduced by variety of methods resulting in films, powders. This technique has allowed both highly dispersed and uniformly distributed metal nanoparticles and formation of agglomerated clusters of nanoparticles. Substances impregnated into Polymers are generally Dyes, Fragrances, Metal nanoparticles etc. International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181 http://www.ijert.org IJERTV6IS010200 Vol. 6 Issue 01, January-2017 (This work is licensed under a Creative Commons Attribution 4.0 International License.) Published by : www.ijert.org 242