IOSR-JAP   Volume-2 ~ Issue-4 ~ Nov–Dec 2012

Paper Type	:	Research Paper
Title	:	Effect of plasticizer on conductivity and cell parameters of (PMMA+NaClO4) polymer electrolyte system
Country	:	India
Authors	:	P. Chandra Sekhar, P. Naveen Kumar, A. K. Sharma
	:	10.9790/4861-0240106

Abstract: The effect of a plasticizer dimethyl formamide (DMF) on the properties of a sodium ion conducting electrolyte based on poly(methyl-methacrylate) (PMMA) complexed with sodium perchlorate (NaClO4) prepared using solution cast technique was investigated. The features of complexation of the electrolytes were studied by X-ray diffraction. Film morphology was examined by Scanning Electron Microscopy (SEM). Various experimental techniques, such as electrical conductivity (temperature dependence) and transference number measurements were used to characterize these polymer electrolyte films. Transference number data show that the charge transference in this polymer electrolyte system is predominantly due to ions. Electrochemical cells of configuration Na/PMMA+NaClO4/(I2+C+electrolyte)andNa/PMMA+NaClO4+plasticizer /(I2+C+electrolyte) were fabricated. The discharge characteristics of the cells were studied under a constant load of 100 kΩ. The open-circuit voltage, short-circuit current and discharge time for the plateau region were measured. The PMMA+NaClO4 polymer electrolyte system with added plasticizer showed an increased discharge time with respect to pure PMMA+NaClO4 electrolyte system.. ,
Key words:Polymer electrolyte, XRD, SEM, Electrical conductivity, Transference number and Discharge profile

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blend Electrolytes" Materials Letters,58, 2004, pp. 641 – 649.
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Paper Type	:	Research Paper
Title	:	Magnetic, Electric and Structural Properties of Ni Substituted Co-Zn Ferrite Nanoparticles Synthesized by Sol-Gel Method
Country	:	India
Authors	:	R. B. Bhise, S. M. Rathod, A. K. Supekar
	:	10.9790/4861-0240712

Abstract:Nickel substituted CoxZn0.8-x Fe2O4 (x=0.2,0.5 and 0.6) ferrite were synthesized by Sol-gel auto combustion method. The powders were sintering at 400oc and 700oc for 2hrs to densify properly. The samples were characterized by XRD, SEM and FTIR and Magnetic properties. The XRD used to analyze phase structure and lattice parameters. The FTIR spectra confirmed that synthesis material is ferrite. Morphology of ferrite powders were investigated by using SEM. Porosity of synthesis ferrite is measured. The saturation magnetization increases with increasing Co-Zn concentration. Resistivity of ferrite material is may be decreases due to vary concentration of Co and Zn.
Keywords: Nanocrystalline, Structural Properties, Sol-gel Auto Combustion method, XRD, FTIR, SEM, Magnetization, Resistivity.

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Paper Type	:	Research Paper
Title	:	Growth, Characterization and Dielectric Property Studies of Zinc Succinate Crystals Grown in Silica Gel Medium
Country	:	India
Authors	:	Binitha M.P and P.P Pradyumnan
	:	10.9790/4861-0241317

Abstract:Single crystals of zinc succinate (ZS) with monoclinic structure were grown in silica gel medium. The functional groups in the crystal were analyzed by FT-IR Spectroscopy. Thermal degradation studies have been carried out by Differential Scanning Calorimetry (DSC). Dielectric constant and a c conductivity have been estimated as a function of frequency for different temperatures.
Keywords: a c conductivity, Dielectric Property, NLO, zinc succinate

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