Fabrication of a highly sensitive magnetic sensor using an HTS thick film
Abstract A highly sensitive magnetic sensor based on Y 1 Ba 2 Cu 3 O 7− x (YBCO) has been fabricated by the spray technique. The value of resistance R ms in the transitional region Δ T of the thick film, was highly sensitive to the applied magnetic field B ex . Here, Δ T is the transitional temperature region between the resistance drop temperature T c onset and residual resistance temperature T c res . The value of residual resistance R res for an applied magnetic field of 80×10 −4 T (80 G) exhibited an increase of about 580% over the resistance found in a zero magnetic field, and did not display any evidence of hysteresis. The fabrication and magnetic characteristics are discussed.