H. Mendoza-León¹, J.G. Cabañas-Moreno¹, A De Ita², L.G. Flores², C. Falcony³, M. Jergel³. ¹Instituto Politécnico Nacional - ESFM, Apdo. Postal 75-373, 07300 México, D.F., ² Universidad Autónoma Metropolitana – Azcapotzalco, México, D.F., ³ CINVESTAV-IPN, México D.F.

It has been reported that thallium-based, high temperature ceramic oxide superconductors having adequate critical current densities may be produces as thin films using highly texturized silver tapes as a substrate. Since commercial pure silver is readily available as cold-rolled sheet, it is of practical interest to investigate whether this kind of material can be made to develop an appropriate texture for this purpose, in particular the well-know cubic (biaxial) recrystallization texture typically found in cold-rolled and annealed pure copper.

Silver sheets have been subjected to a variety of annealing treatments in the temperature range of 673-1200 K. (111) and (200) pole figures and grain size have been determined in every case.

The results show an initial texture similar to the so-called "brass" texture, which develops a considerable "cubic" component by annealing at temperatures bellow 1073 K, coincident with the recrystallization of the cold-rolled structure. The effect of silver purity, annealing time and location across the thickness will be further discussed.

*Work supported by SIPSA and IPN