Thermopower of NiO/(Bi, Pb)-2223 composite

Effect of Co3O4 Nanoparticles Addition on (Bi,Pb)-2223 Superconductor

The effect of nano Co3O4 addition on the superconducting properties of (Bi, Pb)-2223 system was studied. The samples were prepared by the acetate coprecipitation method. The Co3O4 with different sizes (10-30 nm and 30-50 nm) from x=0.00 to 0.05 was added to Bi1.6Pb0.4Sr2Ca2Cu3Oy(Co3O4)x. Phase analysis by XRD method, microstructural examination by SEM and dc electrical resistivity by four point...

بررسی پذیرفتاری مغناطیسی AC در ابررساناهای حجمی (Bi-Pb)2223

  The temperature dependence of ac susceptibility of (Bi-Pb)2223 polycrystalline samples was measured as a function of frequency and ac field amplitude. Analysis of the temperature dependence of the AC susceptibility near the transition temperature (Tc) has been done employing Bean’s critical state model. The observed variation of intergranular critical current densities (Jc) with temperature i...

Primary Phase Field of the Pb-Doped 2223 High-Tc Superconductor in the (Bi, Pb)-Sr-Ca-Cu-O System

Both liquidus and subsolidus phase equilibrium data are of central importance for applications of high temperature supercon-ductors in the (Bi, Pb)-Sr-Ca-Cu-O system, including material synthesis, melt processing and single crystal growth. The sub-solidus equilibria of the 110 K high-Tc Pb-doped 2223 ([Bi, Pb], Sr, Ca, Cu) phase and the location of the primary phase field (crystallization field...

Thermopower of nanocrystalline germanium/hydrogenated amorphous silicon composite thin films

Publishing 1757 - 2223

There are many ways an organization can approach innovation. On one end of the spectrum an organization can choose to have everyone submit any idea. On the other, innovation can be generated from a small, dedicated group of specialists. In the middle there are many variations along the way. This paper discusses the open innovation typology and the options for an organization making the decision...