MAGNETORESISTIVE SENSOR AND THE MANUFACTURING METHOD

판독 소자(read element) 저항 성분이 두 인접 자성층(magnetic layer)들내 자화 방향 사이의 각도(angle)의 코사인(cosine)에 따라 변화하는 스핀 밸브 효과(spin valve effect)에 기초한 자기 저항 판독 센서(mlagnetoresistive read sensor)가 개시된다. 이 센서 판독 소자는 비자성 금속층(nonmagnetic metallic layer)에 의해 분리된 두 개의 인접한 강자성층(ferromagnetic layer)을 포함한다. 반강자성 재료(antiferromagnet...

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Hauptverfasser: DIENY, BERNARD, GURNEY, BRUCE A, SPERIOSU, VIRGIL S, BAUMAGRT, PETER M
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SPERIOSU, VIRGIL S
BAUMAGRT, PETER M
description 판독 소자(read element) 저항 성분이 두 인접 자성층(magnetic layer)들내 자화 방향 사이의 각도(angle)의 코사인(cosine)에 따라 변화하는 스핀 밸브 효과(spin valve effect)에 기초한 자기 저항 판독 센서(mlagnetoresistive read sensor)가 개시된다. 이 센서 판독 소자는 비자성 금속층(nonmagnetic metallic layer)에 의해 분리된 두 개의 인접한 강자성층(ferromagnetic layer)을 포함한다. 반강자성 재료(antiferromagnetic material)로 된 층이 어느 하나의 상기 강자성층 위에 형성되어 상기 하나의 장자성층내 자화 방향을 고정하는 바이어스 자계(bias field)를 제공한다. 연자성 재료로 된 중간층(interlayer)이 강자성층과 반강자성층 사이에 증착되어 상기 반강자성층과 강자성층을 상호 분리하며, 특히 상기 강자성층이 철 또는 철 합금일 경우엔 교환 결합(exchange coupling)을 향상시킨다. A magnetoresistive read sensor based on the spin valve effect in which a component of the read element resistance varies as the cosine of the angle between the magnetization directions in two adjacent magnetic layers is described. The sensor read element includes two adjacent ferromagnetic layers separated by a nonmagnetic metallic layer. A layer of antiferromagnetic material is formed over one of the ferromagnetic layers to provide an exchange bias field which fixes or "pins" the magnetization direction in the one ferromagnetic layer. An interlayer of magnetically soft material is deposited between the ferromagnetic and antiferromagnetic layers separating the ferromagnetic layer from the antiferromagnetic layer and enhancing the exchange coupling, particularly in the instance where the ferromagnetic material is iron or an iron alloy.
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A magnetoresistive read sensor based on the spin valve effect in which a component of the read element resistance varies as the cosine of the angle between the magnetization directions in two adjacent magnetic layers is described. The sensor read element includes two adjacent ferromagnetic layers separated by a nonmagnetic metallic layer. A layer of antiferromagnetic material is formed over one of the ferromagnetic layers to provide an exchange bias field which fixes or "pins" the magnetization direction in the one ferromagnetic layer. An interlayer of magnetically soft material is deposited between the ferromagnetic and antiferromagnetic layers separating the ferromagnetic layer from the antiferromagnetic layer and enhancing the exchange coupling, particularly in the instance where the ferromagnetic material is iron or an iron alloy.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
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subjects ELECTRICITY
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
title MAGNETORESISTIVE SENSOR AND THE MANUFACTURING METHOD
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