Sony Corporation

Atsuko Suzuki

Hiroshi Kano

Akihiko Okabe

Kiyoshi Kagawa

Haruo Watanabe

Ken Kobayashi

Kenji Katori

Noriyuki Kishii

Kenichi Kurihara

Kazuhiko Hayashi

Takahiro Kamei

Takahiro Miyazaki

Toshihiko Yaoi

This invention provides a magnetic recording medium which, even when the friction time is prolonged or the scan speed is increased to achieve a long time recording, will leave no burnt matters onto a magnetic head, reduce spacing loss, and prevent an increase in error rate. This invention also provides a cleaning tape which, without causing any wear and damage of a magnetic head, will remove the head of burnt matters adherent thereto. They are actually a magnetic recording medium and cleaning tape which hold an antiseize agent containing a compound with a pyridine skeleton and two or more ligand sites. Alternatively, they are a magnetic recording medium and cleaning tape which hold an antiseize agent containing a diketone compound. The antiseize agent may contain a titanium coupling agent, carboxylic acid, and phosphor-containing compound, in addition to the above compound.

Magnetic recording medium and head cleaning tape

A magneto-resistance effect film of an artificial lattice film structure having an alternate lamination of a conductor layer and a magnetic layer, or a magneto-resistance effect film of a spin bulb structure having a lamination of a magnetic layer, a conductor layer and a magnetic layer in that order. The conducting layer is mainly composed of an element selected from the group consisting of Cu, Ag and Cr and also contains 0.1 to 30 atomic percent of an addition element having an upper limit of solid solution at room temperature with respect to the element as the main component of not more than 1 percent. Alternatively, the magnetic layer is mainly composed of Fe, Co or Ni and also contains 0.1 to 30 atomic percent of an addition element having an upper limit of solid solution at room temperature with respect to the element as the main component of not more than 1%. Additionally, the thermal resistance can be improved by utilizing a base plate with a heat conductivity of not less than 2 W/mK.

Magneto-resistance effect device with improved thermal resistance

A magnetic information detecting apparatus is disclosed including a recording medium in which magnetic information is recorded and a magnetic field detection unit for detecting the magnetic information, the magnetic field detection unit having its magnetic field detecting section formed of a magnetoresistive element or a Hall element, the magnetic field detecting section surrounding peripheries of the recording medium. The recording medium has a substantially circular cross section. The magnetoresistive element has a structure of an artificial multilayer film formed by alternately stacking a conductor layer and a magnetic layer. The magnetic field detection unit has a soft magnetic body for conducting a magnetic field to the magnetic field detecting section.

Magnetic information detecting apparatus

An artificial lattice film is constituted as a multilayered film in which magnetic layers containing Cu of 1.about.50 atomic percentage and at least one component selected from Fe, Ni and Co and conductive layers are stacked one after another. By forming such an artificial lattice film on a non-magnetic substrate, a magneto-resistance effect element having excellent characteristic for use as magnetic head or magnetic sensor is provided.

Artificial lattice film and magneto-resistance effect element using the

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Kanagawa, Japan

Atsuko Suzuki