Abstract: A magneto-resistive (MR) head having a read element including two magnetic shield films, two magnetic gap films which separate the two magnetic shield films and which are held between the two magnetic shield films, and an MR element held between the two magnetic gap films, with the two magnetic gap films having a stress value of up to 200 MPa.

Abstract: A thin Co--Fe--Ni magnetic film comprising from 40% to 70% by weight of cobalt, from 20% to 40% by weight of iron, and from 10% to 20% of nickel, and having a crystal structure of a mixed crystal with an .alpha. phase of a body-centered cubic structure and a .gamma. phase of a face-centered cubic structure.

Abstract: A thin film magnetic head is capable of providing sufficient characteristics as an interlayer insulation layer even when a low temperature heat treatment is performed, and improving throughput of a process. The thin film magnetic head is fabricated by forming a protective layer 2 on a substrate 1, forming a lower shield 3 on the protective layer 2, forming a reading MR portion 4 on the lower shield 3, and forming an insulation layer 5 as a gap layer. A soft magnetic material layer of permalloy is formed as a common pole 6. On the common pole 6, a negative type photoresist 7 is applied. A patterning is performed by irradiating a light via an insulation layer pattern mask 9 and performing etching by a developer. Then, heat treatment is performed at a temperature lower than or equal to 200.degree. C. under inert atmosphere to form an interlayer insulation layer. Over this, a coil 8 is formed. In order to save a step, a negative type photoresist 7 is applied to form an interlayer insulation layer.

Abstract: A magneto-resistive (MR) head having a read element including two magnetic shield films, two magnetic gap films which separate the two magnetic shield films and which are held between the two magnetic shield films, and an MR element held between the two magnetic gap films, with the two magnetic gap films having a stress value of up to 200 MPa.

Abstract: The invention provides a method of forming a thin film recording head including an upper magnetic substance, a lower magnetic substance cooperating with the upper magnetic substance to form a magnetic circuit, at least one coil layer interposed between the upper and lower magnetic substances, the coil layer being configured in a coil pattern, and an insulative layer interposed between the upper and lower magnetic substances and surrounding the coil pattern. The insulative layer is composed of hard-cured photoresist. A peak intensity ratio of a surface portion of the insulative layer is equal to or less than 0.5 relative to a peak intensity of aromatic C.dbd.C bonding, which aromatic is a main constituent of the photoresist. The peak intensity ratio represents an amount of hydrophilic radical. The invention suppresses the hydrophilic property of a hard-cured photoresist layer to thereby provide an advantage of enhancement of electrical insulation and reduction of noises of a thin film head.

Abstract: For providing a magnetoresistive read transducer capable of increasing the output by the increase of current, reduced with noises and having a durability, a magnetoresistive read transducer comprising a substrate and laminated thereon, a lower shield, a first gap layer, a thin film magnetoresistive element portion, a longitudinal bias layer, an electrode portion and an upper shield, each in a predetermined pattern successively, in which the entire resistance value of the electric conduction including the contact resistance of the electrode portion 7 is set within 1.2 times of a theoretical resistance value calculated based on the specific resistivity of the layer, in which a polysilicon layer is laminated between the magneto resistive film and the longitudinal bias layer.

Abstract: A thin film magnetic head is capable of providing sufficient characteristics as an interlayer insulation layer even when a low temperature heat treatment is performed, and improving throughput of a process. The thin film magnetic head is fabricated by forming a protective layer 2 on a substrate 1, forming a lower shield 3 on the protective layer 2, forming a reading MR portion 4 on the lower shield 3, and forming an insulation layer 5 as a gap layer. A soft magnetic material layer of permalloy is formed as a common pole 6. On the common pole 6, a negative type photoresist 7 is applied. A patterning is performed by irradiating a light via an insulation layer pattern mask 9 and performing etching by a developer. Then, heat treatment is performed at a temperature lower than or equal to 200.degree. C. under inert atmosphere to form an interlayer insulation layer. Over this, a coil 8 is formed. In order to solve a step, a negative type photoresist 7 is applied to form an interlayer insulation layer.

Abstract: The invention provides a thin film recording head including an upper magnetic substance, a lower magnetic substance cooperating with the upper magnetic substance to form a magnetic circuit, at least one coil layer interposed between the upper and lower magnetic substances, the coil layer being configured in a coil pattern, and an insulative layer interposed between the upper and lower magnetic substances and surrounding the coil pattern. The insulative layer is composed of a hard-cured photoresist. A peak intensity ratio of a surface portion of the insulative layer is equal to or less than 0.5 relative to a peak intensity of aromatic C.dbd.C bonding, which aromatic is a main constituent of the photoresist. The peak intensity ratio represents an amount of hydrophilic radical groups. The invention suppresses the hydrophilic property of a hard-cured photoresist layer to reduce the noise of a thin film head.