Biotemplated synthesis of superconducting plate-like YBa2Cu3O7−δ using oligosaccharides

Biopolymer mediated synthesis of plate-like YBCO with enhanced grain connectivity and intragranular critical current

“…14 A recent report describes the low-yield production of submicron plate-like crystals of YBCO. 15 In this work, we develop and demonstrate the capability of the technique to produce uniformly anisotropic, plate-like crystallites of YBCO of micron dimension. The hierarchical structure of these crystallites, as revealed by transmission electron microscopy, is responsible for an unprecedented bulk intragranular critical current density reaching 0.1 MA cm 22 at 77 K-an order of magnitude higher than commercially sourced powder material.…”

HighJcin a biopolymer-mediated synthesis of YBa2Cu3O7−δ

“…Whilst the final material is not phase pure, the Y123 crystallites synthesized have a pronounced plate-like structure, which leads naturally to preferred orientation of the crystallites and the concomitant minimization of large angle and mis-aligned grain boundaries. The formation of plate-like crystallites of Y123 in this work is significant in that it has recently been demonstrated that an increase in the plate-like nature of Y123 will lead to preferred grain boundary orientation with a resulting increase in the critical current density J c [7,8].…”

Highly Porous Superconductors: Synthesis, Research, and Prospects

“…YBCO sponges prepared by the annealing of a solidified mixture of polysaccharide dextran and an aqueous solution of yttrium, barium, and copper nitrates were studied [71][72][73][74][75][76][77][78]. Also, YBCO sponges were made using chitosan [77,79], biogenic aragonite (cuttlefish bones) [80], graphene oxide [81], alginic acid [82], oligosaccharides [83], and xylan [84]. The creation of such sponges is possible on the basis of biopolymers replaced by Bi2223 [85].…”