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giant magnetoresistance

   Also found in: Acronyms, Wikipedia 0.01 sec.
giant magnetoresistance [¦j̄i·ənt ‚mag·nēd·ō·ri′zis·təns]
(solid-state physics)
A very large decrease in electrical resistance upon application of a magnetic field in certain structures composed of alternating layers of magnetic and nonmagnetic metals.


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Giant magnetoresistance has led to a 30-fold increase in hard disk-data densities since then.
Albert Fert of Université Paris-Sud, Orsay, and Peter Grünberg of the Jülich Research Centre in Rhineland will share the 10m Swedish kronor (£755,720) prize for their discovery of giant magnetoresistance (GMR), a quantum mechanical effect that allows huge amounts of data to be pushed into ever-smaller spaces.
The present generation of computer hard-disk drives uses a read-head based on giant magnetoresistance (GMR) thin films.
 
 
 
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