In this letter we report on the growth of thick films of magnetoresistive La2/3Sr1/3MnO3films using a spray printing technique. The as‐prepared films display a room‐temperature magnetoresistance of 0.0012%/Oe in the 1 kOe field region. We will show that this field sensitivity is high enough to fabricate devices which, operated under a bias magnetic field, can be used as a sensitive and low‐cost magnetic sensors. ©1996 American Institute of Physics.