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Determines the critical currents in silver-sheathed (Bi,Pb)[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10-y] superconducting tapes. Presence of highly textured microstructure; Effect of excellent grain alignment in the a-b plane.Donglu
Self-field loss measurements at 77 K on a superconducting (Bi, Pb)[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10]/AgAu tape with twisted filaments are presented. Using the first- and third-harmonic components of the electric field, the hysteretic losses are separated from the total ...
Examines the optimization of silver-sheathed (Bi,Pb)[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10]/Ag conductors for practical applications. Employment of standard powder-in-tube technique; Improvement in the magnetic field dependence of the current density; Enhancement of the transverse ...
Examines the synthesis of M[sub 0.5]Bi[sub 3]P[sub 2]O[sub 10] crystals where M = Ca, Sr, Ba and Pb. Crystal structures; X-ray crystallography; Interconnection of infinite Bi[sub 2]O[sub 2] chains via polyhedra with sandwiched phosphate tetrahedra.Porob...
Demonstrates the reduced texture of (Bi,Pb)[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10+delta] (Bi-2223/Ag) composite conductors. Occurrence of the texturing of Bi-2223 grains; Texture of the formed Bi-2223; Questions raised by the observation about the contributions of the heat ...
The electrical resistivity and thermoelectric power of (Bi[sub 0.8]Pb[sub 0.2-y]V[sub y])[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3-] O[sub 10+δ] pellets with 0 ≤ y ≤ 0.05 is reported between T[sub c0] and 300 K. Thermoelectric power values of all samples were found to be ...
Defects generated by 116 MeV oxygen ion irradiation on polycrystalline Bi2Sr2CaCu2O8+δ (Bi-2212) and Bi1.84Pb0.34Sr1.91Ca2.03Cu3.06O10+δ (Bi-2223) superconductors have been analysed by positron annihilation lifetime (PAL) and X-ray diffraction line profile (XRDLP) techniques. Agglomeration...
An attempt has been made to arrive at a unified pinning mechanism in proton irradiated textured polycrystalline Bi2Sr2CaCu2O8+x (Bi-2212) and Bi1.84Pb0.34Sr1.91Ca2.03Cu3.06O10+x (Bi-2223) superconductors through magnetization studies at low field (up to 1T) and earlier studies of ...
A two-step process is proposed for the formation of c-axis aligned (Bi,Pb)2Sr2Ca2Cu3O10+δ [Bi(2:2:2:3)] platelets in a silver sheath. The process involves: (1) the formation of c-axis aligned (Bi,Pb)2Sr2CaCu2O8+δ at early stage of heat treatment and (2) the subsequent ...