Page "Magnetoresistance" Paragraph 0

Magnetoresistance is the property of a material to change the value of its electrical resistance when an external magnetic field is applied to it.

The effect was first discovered by William Thomson ( more commonly known as Lord Kelvin ) in 1856, but he was unable to lower the electrical resistance of anything by more than 5 %.

This effect was later called ordinary magnetoresistance ( OMR ).

More recent researchers discovered materials showing giant magnetoresistance ( GMR ), colossal magnetoresistance ( CMR ) and magnetic tunnel effect ( TMR ).