Magnetic memory devices having multiple magnetic tunnel junctions therein
First Claim
1. A magnetic device, operable using at least one electrode, comprising:
- at least two magnetic tunnel junctions, writable together into an average state to be thereafter sensed as such, according to magnetic stimuli applied thereto via said at least one electrode.
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Accused Products
Abstract
Magnetic memory devices are disclosed having multiple magnetic tunnel junctions therein writable together into an average state. For example, a magnetic random access memory ("MRAM") array is disclosed having respective pluralities of crossing first and second electrically conductive lines forming a plurality of intersecting regions across the array. The array includes a plurality of magnetic memory cells, each disposed at a respective one of the plurality of intersecting regions. Each cell includes at least two magnetic tunnel junctions therein, writable together into an average state, according to electrical and resultant magnetic stimuli applied thereto via a respective first and second conductive line. The at least two magnetic tunnel junctions provided in each magnetic memory cell provide a predictable magnetic response for all cells across the array. Only the cell at an intersecting region selected by stimuli applied via each of the first and second electrically conductive lines forming the selected region is written, and other cells along the first and second electrically conductive lines forming the selected region are not written. An operating window of applied electrical and therefore magnetic stimuli can be defined to ensure cell selectivity across the memory array.
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Citations
34 Claims
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1. A magnetic device, operable using at least one electrode, comprising:
at least two magnetic tunnel junctions, writable together into an average state to be thereafter sensed as such, according to magnetic stimuli applied thereto via said at least one electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for storing an average state in a magnetic device using at least one electrode, comprising:
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writing at least two magnetic tunnel junctions together into said state, according to magnetic stimuli applied thereto via said at least one electrode; and thereafter sensing the average state from the at least two magnetic tunnel junctions. - View Dependent Claims (13, 14, 15)
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16. A method for forming a magnetic device, comprising:
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providing at least one electrode; and forming said magnetic device proximate said at least one electrode, the magnetic device including at least two magnetic tunnel junctions therein, writable together into an average state to be thereafter sensed as such, according to magnetic stimuli applied thereto via the at least one electrode. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for forming a magnetic memory array, comprising:
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providing a plurality of first conductive lines, and a crossing plurality of second conductive lines, thereby forming a plurality of intersecting regions across the array; and forming a magnetic memory cell at one intersecting region of the plurality of intersecting regions, the magnetic memory cell including at least two magnetic tunnel junctions therein, writable together into an average state, according to magnetic stimuli applied thereto via the respective first and crossing second lines forming said one intersecting region. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification