magnetostrictive transducer

A magnetostrictive transducer is an instrument that converts energy into ultrasonic vibrations. This process relies on magnetostriction, a phenomenon where ferromagnetic materials like iron or nickel change shape when exposed to a magnetic field.12

When an oscillating magnetic field is applied, the material compresses or expands, creating mechanical vibrations at ultrasonic frequencies (above 20 kilohertz). These transducers are often used in applications requiring lower ultrasonic frequencies, such as ultrasonic cleaners and machining tools. They can also function as receivers, converting ultrasonic vibrations back into electrical signals. A magnetostriction oscillator uses these principles to control the frequency of an electric oscillator through induced mechanical vibrations.314