MAGNETIC STRUCTURES, SEMICONDUCTOR STRUCTURES, AND SEMICONDUCTOR DEVICES

Memory cells are disclosed. Magnetic regions within the memory cells include an alternating structure of magnetic sub-regions and coupler sub-regions. The coupler material of the coupler sub-regions antiferromagnetically couples neighboring magnetic sub-regions and effects or encourages a vertical m...

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Hauptverfasser: Kula, Witold, Kinney, Wayne I, Kramer, Stephen J
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creator Kula, Witold
Kinney, Wayne I
Kramer, Stephen J
description Memory cells are disclosed. Magnetic regions within the memory cells include an alternating structure of magnetic sub-regions and coupler sub-regions. The coupler material of the coupler sub-regions antiferromagnetically couples neighboring magnetic sub-regions and effects or encourages a vertical magnetic orientation exhibited by the neighboring magnetic sub-regions. Neighboring magnetic sub-regions, spaced from one another by a coupler sub-region, exhibit oppositely directed magnetic orientations. The magnetic and coupler sub-regions may each be of a thickness tailored to form the magnetic region in a compact structure. Interference between magnetic dipole fields emitted from the magnetic region on switching of a free region in the memory cell may be reduced or eliminated. Also disclosed are semiconductor device structures, spin torque transfer magnetic random-access memory (STT-MRAM) systems, and methods of fabrication.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
INDUCTANCES
INFORMATION STORAGE
MAGNETS
PHYSICS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
SEMICONDUCTOR DEVICES
STATIC STORES
TRANSFORMERS
title MAGNETIC STRUCTURES, SEMICONDUCTOR STRUCTURES, AND SEMICONDUCTOR DEVICES
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