Fujitsu Corporation

Showa Denko K.k.

Fujitsu Limied

Ryosaku Inamura

Takuya Uzumaki

Toshio Sugimoto

Yuta Toyoda

Kazumasa Shimoda

Shingo Yamaguchi

Takao Shinoda

Isatake Kaitsu

Koichi Kasai

An antenna module includes an antenna line disposed annularly, a magnetic body formed annularly along the antenna line, having a bottom part and a pair of side parts to accommodate the antenna line, and provided with end faces of the pair of side parts disposed in a same direction, and an insulator disposed between the magnetic body and the antenna line.

Antenna module and terminal apparatus

A mobile electronic device includes: a body unit that includes a waterproof area; and a cover unit that covers the waterproof area. One of the cover unit and the body unit includes: a sealing member that contacts a contact surface formed on a same plane as the other all along the periphery of the waterproof area, and seals the waterproof area; and a regulation unit that regulates the position of the sealing member.

Mobile electronic device and waterproof cover

A magnetic storage medium includes a seed layer made of non-magnetic and amorphous Co&#x2014;Cr&#x2014;W, an intermediate layer having a crystalline structure, which is made of a non-magnetic material on the seed layer and has a c-axis oriented in a thickness direction of the seed layer in a hexagonal close-packed structure, and a recording layer made of mainly a magnetic material on the intermediate layer and having information magnetically recorded therein.

Magnetic storage medium and information storage device

A perpendicular magnetic recording medium includes a nonmagnetic seed layer, a nonmagnetic intermediate layer provided on the nonmagnetic seed layer, and a perpendicular recording layer provided on the nonmagnetic intermediate layer. The nonmagnetic seed layer includes a first seed layer made of an amorphous material, and a second seed layer provided between the first seed layer and the nonmagnetic intermediate layer and made of a material having a fcc structure. The amorphous material includes at least one element selected from a group consisting of Ta, W, Nb, Mo, Zr and alloys thereof which include at least one of Ta, W, Nb, Mo and Zr as a main component exceeding 50 at. %.

Perpendicular magnetic recording medium and magnetic storage apparatus

The perpendicular magnetic recording medium includes a non-magnetic underlayer composed of Ru or an Ru alloy having a columnar structure in which crystalline particles are isolated from each other by a space, a non-magnetic granular layer provided on the non-magnetic underlayer and composed of crystalline particles and a non-soluble phase and a granular magnetic layer provided on the non-magnetic granular layer and composed of CoCrPt alloy crystalline particles and the non-soluble phase, wherein when a lattice constant in an in-plane direction of the non-magnetic underlayer is a, the lattice constant in the in-plane direction of the non-magnetic granular layer is a, and the lattice constant in the in-plane direction of the granular magnetic layer is a, the relation a&#x3e;a&#x3e;ais satisfied.

Perpendicular magnetic recording medium and magnetic storage device

A perpendicular magnetic recording medium includes a nonmagnetic seed layer, a nonmagnetic intermediate layer provided on the nonmagnetic seed layer, and a perpendicular recording layer provided on the nonmagnetic intermediate layer. The nonmagnetic seed layer includes a first seed layer made of a Ni alloy having a fcc structure, and a second seed layer provided between the first seed layer and the nonmagnetic intermediate layer and made of a Ni alloy having a fcc structure. A content of one or more elements other than Ni within the Ni alloy forming the second seed layer and having a Goldschmidt radius greater than that of Ni is larger than a content of one or more elements other than Ni within the Ni alloy forming the first seed layer and having a Goldschmidt radius greater than that of Ni.

A perpendicular magnetic recording medium, including a soft-magnetic backing layer; and a recording layer provided over the oft-magnetic backing layer. There is provided a magnetic flux slit layer between the soft-magnetic backing layer and the recording layer. The magnetic flux slit layer includes a soft-magnetic layer having a generally columnar structure generally isolated magnetically in an in-plane direction. The magnetic flux slit layer contains at least one selected from the group consisting of Co, Fe, Ni, a Co alloy, a Fe alloy, and a Ni alloy, as a major component, and the magnetic flux slit layer further contains any one selected from the group consisting of Ta, Cu, Pb, Cr, and Re.

A magnetic recording medium includes; a base member; an underlayer formed on the base member; a main recording layer formed on the underlayer, and a writing assist layer formed on or under the main recording layer in contact with the main recording layer. The main recording layer has perpendicular magnetic anisotropy with an anisotropic magnetic field of Hand an inclination of a reversal part of a magnetization curve of a. The writing assist layer has an anisotropic magnetic field of Hand an inclination of a reversal part of a magnetization curve of a. The anisotropic magnetic fields Hand Hand the inclinations aand asatisfy H&#x3e;Hand a&#x3e;a.

Magnetic recording medium and magnetic recording device

The magnetic recording medium comprises a backing layer including a first magnetic layer, a second magnetic layer which is formed over the first magnetic layer, is ferrimagnetic and is magnetized in a direction opposite to the first magnetic layer, and a third magnetic layer formed over the second magnetic layer and magnetized in a direction opposite to the second magnetic layer; and a perpendicular magnetic recording layer for recording magnetic information formed over the backing layer. Antiferromagnetic exchange interconnection is formed between the first magnetic layer and the second magnetic layer and between the second magnetic layer and the third magnetic layer.

Recording medium having multiple magnetic layers

A perpendicular magnetic recording medium at least comprises a perpendicular magnetic recording layer and a backing layer backing the perpendicular magnetic recording layer. The backing layer has an in-plane magnetization and is formed of a ferrimagnetic material having a compensation temperature in the vicinity of a recording/reproducing temperature in which reproducing of magnetic information is made from the perpendicular magnetic recording layer. A magnetic storage apparatus for recording and reproducing magnetic information using the perpendicular magnetic recording medium is also disclosed.

Growing community of inventors

Kawasaki, Japan

Ryosaku Inamura