Superconducting Properties of PIT $\text{BaFe}_{2-x}\text{Co}_{x}\text{As}_{2}$ Tapes

We prepare BaFe
_2-x
Co
_x
As
₂
superconducting tape via the powder in tube method. The critical current density at 4.2 K and 10 T is 1000 A/cm
²
. We find that most of the grains are 1-2 μm large with random orientations, leading to a low c-axis texture. Via magnetization and magnetoresistance measurement, it is found that the superconducting phase is inhomogeneous. The flux pinning energy, which is obtained via the thermal activated flux flow model, is small and decreases quickly with the increasing magnetic field. As a result, J
_c
of the tape is low and shows a strong field dependence.