Magnetoelectric Sensor Excitations In Hexaferrite Films

We developed techniques for H- and E-field sensors utilizing single phase magnetoelectric (ME) hexaferrite thin films in the frequency range of 1 kHz to 10 MHz. The technique incorporating solenoid coils and multi-capacitors bank was developed to probe the physics and properties of ME hexaferrite film and explore ME effects for sensor detections and tunable device applications. For H-field sensing, we obtained sensitivity of 4 x 10(-4) V/Gm and for E-field sensing the sensitivity was 10(-3) Gm/V. Tunability of up to 6% was achieved for tunable inductor applications. The proposed fabrication designs lend themselves to significant (similar to 10(6)) improvements in sensitivity and tunability. (C) 2015 AIP Publishing LLC.