MAGNETIC SENSOR AND ITS PRODUCTION METHOD, FERROMAGNETIC TUNNEL JUNCTION DEVICE AND ITS PRODUCTION METHOD, AND MAGNETIC HEAD USING THE SAME
专利汇可以提供MAGNETIC SENSOR AND ITS PRODUCTION METHOD, FERROMAGNETIC TUNNEL JUNCTION DEVICE AND ITS PRODUCTION METHOD, AND MAGNETIC HEAD USING THE SAME专利检索，专利查询，专利分析的服务。并且A magnetic sensor comprises (1) a support base, (2) a ferromagnetic tunnel junction device having a first magnetic layer on the support base, a tunnel insulating layer containing aluminum oxide, formed on the first magnetic layer by sputtering an aluminum target containing aluminum of 99.999% purity and oxidizing the aluminum film formed on the first magnetic layer, and a second magnetic layer formed on the tunnel insulating layer, and (3) a transducer for transducing a change of magnetic field to a change of resistance. The ferromagnetic tunnel junction device (2) can be alternatively a device in which the tunnel junction has an asymmetric voltage-resistance characteristic with respect to the direction in which voltage is applied. The insulating layer of the asymmetric voltage-resistance characteristic is formed by heat-treating an insulating layer material film, varying the partial pressure of oxygen in the atmosphere where an oxide insulating layer is formed, and using two or more film-forming target materials and a moving base.，下面是MAGNETIC SENSOR AND ITS PRODUCTION METHOD, FERROMAGNETIC TUNNEL JUNCTION DEVICE AND ITS PRODUCTION METHOD, AND MAGNETIC HEAD USING THE SAME专利的具体信息内容。
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