Temperature characteristics of magnetoelectric effect in bilayer ferromagnetic-piezoelectric structures

摘要

Temperature characteristics of resonant magnetoelectric effect in bilayer structures consisting of langatate, lead zirconate titanate, nickel, and amorphous ferromagnetic Metglas layers have been investigated in the temperature range of 150-400 K. The influence of ferromagnetic and piezoelectric layer's parameters on the temperature dependences of resonant frequency and value of magnetoelectric coefficient α_E has been demonstrated. It was shown that competition between temperature variations of FM and PE layer's elastic modules results in a stabilization of the LGT-Ni structure resonant frequency with accuracy better that 0.05%. The results can be used to develop magnetoelectric magnetic field sensors.