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Adiabatic rotational switching memory element including a ferromagnetic decoupling layer
 
   
Document Number
US Patent 7205596
Issued Date
April 17, 2007
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Inventors
Beer; Peter (Fontainebleau,FR)
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Abstract
A magnetoresistive memory element includes a stacked structure with a ferromagnetic reference region including a fixed magnetization; a ferromagnetic free region including a free magnetization that is free to be switched between oppositely aligned directions with respect to an easy axis thereof; and a tunneling barrier made of a non-magnetic material. The ferromagnetic reference and free regions and the tunneling barrier together form a magnetoresistive tunneling junction. The ferromagnetic free region includes a plurality of N ferromagnetic free layers being magnetically coupled such that magnetizations of adjacent ferromagnetic free layers are in antiparallel alignment, where N is an integer greater than or equal to two. The ferromagnetic free region further includes at least one ferromagnetic decoupling layer including frustrated magnetization in orthogonal alignment to ferromagnetic free layer magnetizations and being arranged in between adjacent ferromagnetic free layers.
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Number of Claims:
7
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Published
April 17, 2007
Application Number
11/117,713
Filed
April 29, 2005
US Classification
257/295   257/422
Int'l Classification
H01L   29/76   (20060101)  
Examiner
Attorney/Law Firm
USPTO Field of Search
257/295   257/422   257/427  
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