Effect of Nanosized NiF<sub>2</sub>Addition on the Transport Critical Current Density of Ag-Sheathed (Bi<sub>1.6</sub>Pb<sub>0.4</sub>)Sr<sub>2</sub>Ca<sub>2</sub>Cu<sub>3</sub>O<sub>10</sub>Superconductor Tapes
Advances in materials science and engineering