Question

What is Barkhausen effect ??

Answer 1

During the magnetization of a ferromagnetic substance, when magnetizing field is increased or decreased steadily then magnetization of the substance does not increase or decrease steadily but proceeds in a series of minute jumps. This effect is called Barkhausen effect. This effect supports the domain Theory of magnetism.

Answer 2

Barkhausen effect, series of sudden changesin the size and orientation offerromagnetic domains, or microscopic clusters of aligned atomic magnets, that occurs during a continuous process of magnetizationor demagnetization. TheBarkhauseneffect offered direct evidence for the existence of ferromagnetic domains, which previously had been postulated theoretically.