Magnetic element with insulating veils and fabricating method thereof

• Main Authors: DEHERRERA MARK, TEHRANI SAIED N, DURLAM MARK, KYLER KELLY WAYNE, CHEN EUGENE YOUJUN, KERSZYKOWSKI GLORIA
• Format: Patent
• Language: English
• Published: 28.06.2005
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INDUCTANCES; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; MAGNETS; PHYSICS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SEMICONDUCTOR DEVICES; TRANSFORMERS

An improved and novel device and fabrication method for a magnetic element, and more particularly a magnetic element ( 10 ) including a first electrode ( 14 ), a second electrode ( 18 ) and a spacer layer ( 16 ). The first electrode ( 14 ) and the second electrode ( 18 ) include ferromagnetic layers ( 26 & 28 ). A spacer layer ( 16 ) is located between the ferromagnetic layer ( 26 ) of the first electrode ( 14 ) and the ferromagnetic layer ( 28 ) of the second electrode ( 16 ) for permitting tunneling current in a direction generally perpendicular to the ferromagnetic layers ( 26 & 28 ). The device includes insulative veils ( 34 ) characterized as electrically isolating the first electrode ( 14 ) and the second electrode ( 18 ), the insulative veils ( 34 ) including non-magnetic and insulating dielectric properties. Additionally disclosed is a method of fabricating the magnetic element ( 10 ) with insulative veils ( 34 ) that have been transformed from having conductive properties to insulative properties through oxygen plasma ashing techniques.