The Barkhausen Effect is a series of minute jumps in this property.  It is believed to be caused by fields generated by electron spins in combination with a mechanism known as exchange coupling.  Substances exhibit this property below the Curie temperature, and most substances that exhibit it are divided into regions known as domains.  FTP, identify this retention of a mag
The Barkhausen Effect is a series of minute jumps in this property.  It is believed to be caused by fields generated by electron spins in combination with a mechanism known as exchange coupling.  Substances exhibit this property below the Curie temperature, and most substances that exhibit it are divided into regions known as domains.  FTP, identify this retention of a magnetic moment even when the external magnetic field is reduced to zero, so-named because of its presence in iron.
The Barkhausen Effect is a series of minute jumps in this property.  
ferromagnetism