Microstructure of laser floating zone (LFZ) textured (Bi, Pb)SrCaCuO superconductor composites

High thermoelectric performance in Bi2-xPbxBa2Co2Oy promoted by directional growth and annealing

“…These cylinders were used as feed in a LFZ device equipped with a continuous power Nd:YAG laser (λ = 1064 nm), following the experimental procedure described elsewhere [27]. All the LFZ-grown samples were processed at 30 mm h -1 under air with a seed rotation of 3 rpm to maintain the cylindrical geometry.…”

Processing effects on the thermoelectric properties of Bi₂Ca₂Co_1.7O_x ceramics

“…2b. On the other hand, as already observed in similar systems [28,29] the as grown samples are composed of a mixture of are reduced from the samples prepared by the classical solid state method (Fig. 1a) to the textured ones (Figs.…”

Effect of Yb substitution in Bi-2212 ceramics prepared by laser floating zone technique

“…On the other hand, it is well-known that a good grain orientation is necessary to obtain high electrical current capabilities in these materials [7]. Among other successful techniques to produce well oriented grains, the laser texturing ensures a high degree of texture at relatively high rates [7][8][9][10][11]. Besides these useful methods used in the preparation of ceramic superconductors such as the laser floating zone (LFZ) [12] and the electrically assisted laser floating zone (EALFZ) techniques [13], cation doping [14][15][16][17][18][19][20][21][22][23][24][25][26][27] or metallic additions [28][29][30] can also ensure the important improvements in the basic properties of the BSCCO system.…”