Magnetic memory element having information core and readout core
Abstract
Abstract A MEMORY ELEMENT COMPRISING TWO OPEN-FLUX-PATH THINFERROMAGNETIC-FILM LAYERS HAVING APPROXIMATELY THE SAME PHYSICAL DIMENSIONS, MATERIAL COMPOSITION AND MAGNETIC CHARACTERISTICS, TERMED THE INFORMATION CORE AND THE READOUT CORE, EACH HAVING UNIAXIAL ANISOTROPY FOR PROVIDING PARALLEL EASY AXES. A FIRST EMBODIMENT UTILIZED COINCIDENT LONGITUDINAL AND TRANSVERSE WRITE DRIVE FIELDS TO ALIGN THE MAGNETIZATION OF THE INFORMATION CORE AND THR READOUT CORE IN A PARALLEL RELATIONSHIP, A SUBSEQUENT TRANSVERSE SET DRIVE FIELD SWITCHES THE MAGNETIZATION OF THE READOUT CORE CAUSING IT TO ALIGN ITSELF ANTI-PARALLEL THAT OF THE INFORMATION CORE WHEREAS EACH CORE PLURALITY CLOSES THE OTHERWISE OPEN FLUX PATH OF THE OTHER. A SECOND EMBODIMENT UTILIZES COINCIDENT LONGITUDINAL AND TRANSVERSE WRITE DRIVE FIELDS OF RELATIVELY LONG DURATION AND OF GENTLY SLOPING LEADING AND TRAILING EDGES TO ALIGN THE MAGNETIZATION OF THE CORES ANTI-PARALLEL EACH OTHER.
Inventors
- 👤 Frank R Janisch
- 👤 William W Davis
Bibliographic Details
Claims Analysis
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