magnetoionic.

As an electromagnetic wave passes through an ionised region it will be separated into ordinary and extraordinary waves by the Earth’s magnetism and provides a device to make another bilateral horizon.

Magnetoelectricity may be used for measuring pulse electric, or magnetic, fields. Incidentally, chromium oxide has the property of shorting out, or becoming magnetised when placed in an electron field. Conversely it is electrically polarised when place in a magnetic field.