MgB/sub 2/ thick films via screen printing

We report the fabrication of MgB/sub 2/ thick films using a simple screen printing method. The substrates investigated were mono-crystalline Al/sub 2/O/sub 3/, LaAlO/sub 3/, MgO, ZrO, SrTiO/sub 3/, Si as well as steel. The dense, polycrystalline MgB/sub 2/ films consisted of crystallites with longest dimensions of about 100 nm. No texturing was observed. The transition temperatures T/sub c(0)/ varied between 34 and 36 K with transition widths smaller than 2 K. The critical current densities depended only modestly on the external field. At 6 T critical current densities of 1 /spl times/ 10/sup 8/ A/m/sup 2/ could be measured at 10 K.