Crystal structure of CuTl-1223 phase was not affected after addition of Ni nanoparticles.
Infield superconducting properties were suppressed after addition of Ni nanoparticles.
Activation energy of CuTl-1223 phase was decreased with increase of Ni nanoparticles.
Increase in ∆T shows reduced pinning with increased Ni nanoparticles and applied magnetic field.