摘要:
A magnetic field sensing element comprises an underlayer formed on a substrate, a giant magnetoresistance element formed on the underlayer for detecting a change in a magnetic field, and an integrated circuit formed on the substrate for carrying out predetermined arithmetic processing based on a change in a magnetic field detected by the giant magnetoresistance element, wherein the giant magnetoresistance element and the integrated circuit are formed on the same surface.
摘要:
The present invention improves the sensitivity and expands the temperature range of operation of a magnetic detection device used in conjunction with rotary shafts such as those found in automobiles. A magnetic detection element consists of a giant magnetoresistance element and an integrated circuit for performing a predetermined operational processing based on the variation of magnetic field detected by the giant magnetoresistance element, and the magnetic detection element is operated in the magnetic field in the range of exceeding the magnetic field for maximizing the resistance value of the giant magnetoresistance element and below the field obtained by multiplying the saturation magnetic field of the giant magnetoresistance element by 0.8.
摘要:
A magnetic field sensing element comprises an underlayer formed on a substrate, a giant magnetoresistance element formed on the underlayer for detecting a change in a magnetic field, and an integrated circuit formed on the substrate for carrying out predetermined arithmetic processing based on a change in a magnetic field detected by the giant magnetoresistance element, wherein the giant magnetoresistance element and the integrated circuit are formed on the same surface.
摘要:
A magnetic thin film memory is provided including a plurality of magnetic thin film memory elements each adapted to record information on the basis of the direction of magnetization of a magnetic thin film thereof, the magnetic thin film memory elements being each composed of at least the magnetic thin film and a switching element. With such a constitution the magnetic thin film memory can be reduced in size while a sufficiently large signal can be obtained with a substantially improved SN ratio. A method for recording and reproduction information using the magnetic thin film memory is also provided. In another aspect, the present invention provides a magnetic thin film memory element including at least two kinds of magnetic layer, and a nonmagnetic layer which is interposed between the magnetic layers wherein the two kinds of magnetic layers are stacked so as to be coupled to each other by an exchange interaction through the nonmagnetic layer.
摘要:
A MR element which has a basically three-layered structure wherein the first and the second magnetic layer sandwich the nonmagnetic layer or of a basically five-layered structure wherein nonmagnetic layers are sandwiched between the first and second magnetic layers and between the second and third magnetic layers, respectively. The MR element of such arrangement offers a surprisingly large MR ratio under application of a sufficiently low magnetic field despite such a simple arrangement thereof.
摘要:
A magnetic thin film memory wherein the memory is composed of magnetic thin films with a layer of a higher coercive force and a layer of a lower coercive force via a nonmagnetic layer laminated repetitively, or magnetic thin films having the easy magnetization axis which lies between the perpendicular and the horizontal directions of the magnetic thin film, and information is recorded on the layer of a lower coercive force, or information is recorded by changing the direction of the magnetization by means of a magnetic field applied by two recording lines which cross the magnetic thin film, thereby to obtain a sufficient amplitude of reproduction signal even when the size of the memory is reduced.
摘要:
The present invention provides a sensor element having a sensor substrate and a sensing portion supported by the sensor substrate. A resin film is provided between the sensor substrate and the sensing portion. The resin film has a high heat resistance to the temperature of the fabrication process and the use of sensor element, has excellent coverage of a three-dimensional structure, has a flat surface, applies a low stress to the sensing portion, is formed at low temperature, and prevents the sensing portion from being adversely affected in its fabrication process.
摘要:
The invention provides a sensor element having a sensor substrate and a flat sensor portion supported by the sensor substrate in which the surface of the flat sensing portion is covered with a silicone resin film. The silicone resin film is excellent in step coverage of the flat sensing portion, having low stress applied to the sensing portion, can be formed at low temperature and can prevent the sensing portion from being effected with adverse influence even in the fabrication steps.
摘要:
A magnetoresistive sensor device including a substrate, and a sensing portion and a signal processing circuit formed above the substrate with a resin film being disposed between the sensing portion and the signal processing circuit. The sensing portion detects changes in a magnetic field induced by a moving body, is located at a position for effectively detecting changes in a magnetic field induced by the moving body, and is constituted by a magnetoresistive sensor element.
摘要:
An information storage system for recording and reproducing information by use of irradiating light on a medium capable of overwriting information is provided. The information storage system is capable of recording information even if the light intensity is varied so as to enhance reliability. The intensity of the light at the time of overwriting is modulated, the more intense light intensity being P.sub.H and the less intense light intensity being P.sub.L. The system includes a mechanism to keep relationship of P.sub.H +.alpha.P.sub.L equal to a constant (.alpha. being a constant depending on the recording conditions). The laser drive circuit is so adjusted that P.sub.H and P.sub.L always provide an optimal condition even if P.sub.H and/or P.sub.L vary. Thus recording can always be performed under optimal conditions to enhance the reliability of the information storage system to expand the power margin of a recording medium and to increase the percentage yield of information medium.