Question

how ferromagnetic materials are used to produce ultrasonic waves

Answer 1

Yes, ferromagnetic materials are used to produce ultrasonic Waves. When a iron is magnetised then it's length increases due to alignment of spins parallel( due to lower energy options) and very few anti parallel(due too their high energy options) to the field. ... This effect is used to produce ultrasonic Waves

Answer 2

Yes, ferromagnetic materials are used to produce ultrasonic Waves. When a iron is magnetised then it's length increases due to alignment of spins parallel( due to lower energy options) and very few anti parallel(due too their high energy options) to the field.This effect is used to produce ultrasonic Waves.