The superconducting properties of TlBa2CaCu2O7+&dgr;(Tl‐1212) films are greatly enhanced by annealing in unreactive ambients such as nitrogen at temperatures ranging fromTa=250–600 °C. The transition temperature,Tc, of these Tl‐1212 films as‐grown in oxygen is 70 K. Annealing for 1 h at 250 °C elevatesTcabove 90 K.Tcfurther increases and sharpens forTa=600 °C. In addition, subtle changes occur in the microstructure correlating with improved critical current density. These results indicate that Tl‐1212 films may be of greater relevance for electronics applications than previously believed. ©1995 American Institute of Physics.