Apparatus and method for production of untwinned YBCO films

摘要

A method for manufacturing untwinned YBCO film can include the initial the step of depositing YBCO film on a substrate having a first end and second end. A temperature gradient can be established from the first end to the second end, which can establish an oxygen gradient in the YBCO film. A uniaxial pressure can further be established the film, in the same direction as the temperature gradient, form the first end to the second end. When the uniaxial pressure is established simultaneously with the temperature gradient, the result can be an untwinned YBCO film.

主权项

1. A method for manufacturing untwinned YBCO film, said method comprising the steps of:
A) depositing a YBCO film having an initial uniform oxygen content on a substrate so that said YBCO film has a first end and a second end; B) exerting a uniaxial pressure on said film from said first end to said second end; C) supplying a desired oxygen partial pressure on said YBCO film; and, D) establishing a first temperature at said first end and a second temperature at said second end, said first temperature being lower than said second temperature to establish an oxygen gradient in said film, said step D) being accomplished simultaneously with said step B) and step C) so that said YBCO film remains untwinned at the completion of said step D).