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Composites of Bi-2212 with Cobalt ferrite (CoFe2O4) have been prepared to study different properties like critical current density, transition temperature and surface morphology. Bulk Bi2Sr2CaCu2o8 (Bi-2212) superconductors are prepared by solid state route. Cobalt ferrite (CoFe2O4) samples are prepared via sol-gel method. The phases of both Bi-2212 and cobalt ferrite are studied by x-ray diffraction, which are found to be in match with JCPDS data. When the various concentrations of cobalt ferrite is added to Bi-2212, the transition temperature of Bi-2212 decreases drastically. Addition of higher concentration makes the sample semiconducting till the lowest temperature of investigation. The critical current density of Bi-2212 is measured below the transition temperature. It is observed that the critical current density of Bi-2212 decreases with increasing temperature.

The goal of this project is to fabricate a low cost chemical vapor deposition (CVD) setup and synthesize hybrid nanomaterials i.e. copper oxide (CuO)-CdX (X=Se, S) nanoparticles decorated core-shell heterostructure. The synthesized hybrid nanomaterials have been fabricated into a device (photodetector) for the measurement of current-voltage characteristics in dark and under UV illumination. Furthermore, the growth model for the formation of core-shell heterostructure has also been discussed in this project. Chapter-I narrates about the fundamentals of materials, nanomaterials and hybrid nanomaterials. In this chapter, the importance, properties, application of nanomaterials have been outlined. Moreover, the properties and morphology and corresponding application are highlydependent on the synthesis methods. Chemical vapor deposition (CVD) technique is found be one of versatile among all other preparation methods. The motivation by addressing the challenges have been discussed thoroughly. Chapter-II describes the fabrication of a low cost CVD setup. For the fabrication of CVD setup, a three-zone horizontal furnace, reaction tube, a rotary van pump and three mass flow meters have been procured. A liquid precursor handling system and a reaction chamber which has fitted with two couplings have been designed. All these subcomponents have been assembled and integrated into a single unit CVD setup. Chapter-III discusses about the detailed experimental procedure for the synthesis of CuO nanowires-CdX (X=Se, S) nanoparticles decorated core-shell heterostructure. For the synthesis of CuO-CdX (X= Se, S) heterostructure nanomaterials, CuO nanowires have been synthesizedfirst by using thermal oxidation of Cu foil in air at 5000C for 5 hours. These CuO nanowires grown on cu foils have been used for the synthesis of heterostructure by using the fabricated CVD. All these materials i.e. CuO nanowires, CuO-CdSe & CuO-CdS heterostructure have been characterized by field emission elect

The goal of this project is to fabricate a low cost chemical vapor deposition (CVD) setup and synthesize hybrid nanomaterials i.e. copper oxide (CuO)-CdX (X=Se, S) nanoparticles decorated core-shell heterostructure. The synthesized hybrid nanomaterials have been fabricated into a device (photodetector) for the measurement of current-voltage characteristics in dark and under UV illumination. Furthermore, the growth model for the formation of core-shell heterostructure has also been discussed in this project. Chapter-I narrates about the fundamentals of materials, nanomaterials and hybrid nanomaterials. In this chapter, the importance, properties, application of nanomaterials have been outlined. Moreover, the properties and morphology and corresponding application are highlydependent on the synthesis methods. Chemical vapor deposition (CVD) technique is found be one of versatile among all other preparation methods. The motivation by addressing the challenges have been discussed thoroughly. Chapter-II describes the fabrication of a low cost CVD setup. For the fabrication of CVD setup, a three-zone horizontal furnace, reaction tube, a rotary van pump and three mass flow meters have been procured. A liquid precursor handling system and a reaction chamber which has fitted with two couplings have been designed. All these subcomponents have been assembled and integrated into a single unit CVD setup. Chapter-III discusses about the detailed experimental procedure for the synthesis of CuO nanowires-CdX (X=Se, S) nanoparticles decorated core-shell heterostructure. For the synthesis of CuO-CdX (X= Se, S) heterostructure nanomaterials, CuO nanowires have been synthesizedfirst by using thermal oxidation of Cu foil in air at 5000C for 5 hours. These CuO nanowires grown on cu foils have been used for the synthesis of heterostructure by using the fabricated CVD. All these materials i.e. CuO nanowires, CuO-CdSe & CuO-CdS heterostructure have been characterized by field emission elect

Composites of Bi-2212 with Cobalt ferrite (CoFe2O4) have been prepared to study different properties like critical current density, transition temperature and surface morphology. Bulk Bi2Sr2CaCu2o8 (Bi-2212) superconductors are prepared by solid state route. Cobalt ferrite (CoFe2O4) samples are prepared via sol-gel method. The phases of both Bi-2212 and cobalt ferrite are studied by x-ray diffraction, which are found to be in match with JCPDS data. When the various concentrations of cobalt ferrite is added to Bi-2212, the transition temperature of Bi-2212 decreases drastically. Addition of higher concentration makes the sample semiconducting till the lowest temperature of investigation. The critical current density of Bi-2212 is measured below the transition temperature. It is observed that the critical current density of Bi-2212 decreases with increasing temperature.