| 摘要 |
PURPOSE:To extend a region accompanied with magnetizing rotation without requiring the working of minute grooves by providing parallel and linear projecting parts or recessed parts on the surface of a substrate constituting a ferromagnetic magneto- resistance effect element (MR element) or the surface of an antiferromagnetic material which is brought into contact with the MR element. CONSTITUTION:Grooves 3 are formed in parallel on the surface of a substrate 2, and an MR element 1' is formed on the substrate 2. An antiferromagnetic material 4 which performs of direct exchanging action with the MR device is laminated on the element 1'. Consequently, if an axis E.A of easy magnetization of the element 1' is set to the direction of grooves 3, the direction of magnetization of an atom layer, which forms an interface with the MR device, of the antiferromagnetic material 4 is set to the direction of grooves 3. An angle made by the direction of a length l of the element 1' and the direction of grooves 3 is set to a prescribed value theta. Consequently, a sense current I forms the angle theta with grooves 3. Because of the existence of grooves 3, the element 1' is magnetically divided to stripe-shaped MR devices 6 and 7. Consequently, when an external signal magnetic field is applied to the element 1', magnetization M of devices 6 and 7 is rotated smoothly from the start point theta in accordance with the intensity of the external signal magnetic field, and the action of the unstable magnetization M is suppressed. |
