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We report on transport properties of grain boundaries fabricated inYBa2Cu3O7-x thin films grown by the liquid phase epitaxy (LPE) technique on MgOasymmetrical bicrystal substrate with 45o misorientation angle. In total around10 samples have been studied. Substantial scatter of zero field values of thecritical current density at 5K has been observed. The upper limit of Jc of theorder of 104 A/cm2 found in our study is close to previously reported data for45o bicrystals grown by various physical vapour deposition methods while theminimal value of Jc for the LPE grown bicrystals in striking difference to theresults published before is exactly equal to zero. For samples with non-zero Jcwe have found a few different types of critical current dependence on magneticfield ranging from pattern reminiscent Fraunhover-like Ic(H) to Ic(H) profilewith Ic minimum at zero field.

Electric transport properties of YBCO bicrystal films with 45o misorientation angle grown by liquid phase epitaxy