MgB2 thick films via screen printing

We report the fabrication of MgB2 thick films using a simple screen printing method. The substrates investigated were Al2O3, LaAlO3,. MgO, ZrO, SrTiO3, Si and steel. The dense, polycrystalline films consisted of crystallites with longest dimensions of about 100 nm. No texturing was observed. The transition temperatures Tc(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. Dramatic drops already at low fields as found for the cuprates were not observed for MgB2. At 6 T critical current densities of 2x108 A / m2 could be measured at 10 K.