Tdk Corporation

Sae Magnetics (h.k.) Limited

Ifire IP Corporation

Yukio Kawaguchi

Atsushi Hitomi

Kei Sugiura

Masahiro Itoh

Kazumitsu Tanaka

Akira Sato

Shigeru Shoji

Isamu Kuribayashi

Toshikazu Tanishima

Minoru Sakurabayashi

Masaki Takahashi

Yoshihiko Yano

Katsuyuki Kurachi

Tsuneo Kuwahara

Tomoyuki Oike

Tohru Kineri

Hiroshi Takasaki

Naruki Kataoka

Tsutomu Koyanagi

Takao Matsumoto

Cheng Yih Liu

Masayasu Yamaguchi

Keiko Kubo

Kenichi Jinguji

The present invention aims at providing a sputtering target for making an optical medium whose reflective layer is mainly composed of Ag and capable of attaining an optical medium which is excellent in surface smoothness and can sufficiently suppress noise and jitter, a method of making the same, an optical medium, and a method of making the same. The present invention provides a sputtering target for making an optical medium comprising 0.1 to 2 at % of one or two elements selected from the group consisting of Ta and Nb, 0.1 to 1 at % of Al, and the balance constituted by Ag and unavoidable impurities; and an optical medium comprising a reflective layer having this composition on a substrate.

Sputtering target for making optical medium, method of making same, optical medium, and method of making same

A sputtering target for optical media is mainly composed of Al and contains 1 to 10 at % of one or two species of elements selected from the group consisting of Ta and Nb and 0.1 to 10 at % of Ag. An optical mediumcomprises a substrateand reflective layersA,B provided on the substrate. Each of the reflective layersA,B has a composition, mainly composed of Al, containing 1 to 10 at % of one or two species of elements selected from the group consisting of Ta and Nb and 0.1 to 10 at % of Ag.

Sputtering target for optical media, method of manufacturing same, optical medium, and method of manufacturing same

A sintered body for a magnetic head slider, which can reduce differences in level of an air bearing surface while yielding a high strength, a magnetic head slider using the same, and a method of manufacturing a sintered body for a magnetic head slider are provided. The sintered body of the present invention is a sintered body comprising alumina crystal grains and a thin film containing carbon provided at a grain boundary between the alumina crystal grains, whereas the alumina crystal grains have an average particle size of 0.05 to 0.5 &#x3bc;m.

Sintered body, magnetic head slider, and method of manufacturing sintered body

A sputtering target for fluorescent thin-film formation comprising a matrix material and a luminescent center material, wherein said matrix material has a chemical composition represented by the following formula (1), and simultaneously satisfies conditions represented by the following inequalities (2) to (5).MABOS&#x2003;&#x2003;(1)0.05&#x2266;&#x2266;5 &#x2003;&#x2003;(2)1&#x2266;&#x2266;6 &#x2003;&#x2003;(3)0.01&#x2266;/()&#x2266;0.85 &#x2003;&#x2003;(4)0.6&#x2266;(3/2)/()&#x2266;1.5 &#x2003;&#x2003;(5) wherein Mrepresents one or more elements selected from the group consisting of Zn, Cd and Hg, A represents one or more elements selected from the group consisting of Mg, Ca, Sr, Ba and rare earth elements, B represents one or more elements selected from the group consisting of Al, Ga and In, and v, x, y, z and w each represent numerical values satisfying the conditions specified in the inequalities (2) to (5).

Sputtering target for forming thin phosphor film

The magnetic head slider material of the present invention is a magnetic head slider material made of a sintered body containing alumina, titanium carbide, and carbon; wherein a titanium carbide crystal grain has an average crystal grain size greater than that of an alumina crystal grain in the sintered body.

Magnetic head slider material, magnetic head slider, and method of manufacturing magnetic head slider material

The magnetic head slider material of the present invention is constituted by a sintered body containing 100 parts by weight of alumina, 20 to 120 parts by weight of titanium carbide, and 0.2 to 9 parts by weight of carbon.

Magnetic slider and method of manufacturing magnetic head slider

A ferrite substrate for thin-film inductors is provided by means of blending raw materials to meet a composition of di-iron trioxide (FeO): 40 to 55 mol %, nickel oxide (NiO): 5 to 35 mol %, zinc oxide (ZnO): 10 to 40 mol %, and bismuth trioxide (BiO): 150 to 750 ppm, or of FeO: 40 to 55 mol %, NiO: 5 to 35 mol %, ZnO: 10 to 40 mol %, cupric oxide (CuO): 5 to 10 mol %, and manganese dioxide (MnO): 0.5 to 2 mol %, and then molding and sintering the blended material, and applying hot isostatic pressing to the sintered article. A thin-film common mode filter and a thin-film common mode filter array using the ferrite substrate and the manufacturing method of the substrate are also provided.

Ferrite substrate for thin-film inductors, thin-film common mode filter using the substrate, and thin-film common mode filter array using the substrate

Ferrite substrate, thin-film common mode filter using the substrate, thin-film common mode filter array using the substrate and manufacturing method of the substrate

A material for a magnetic head slider according to the present invention is a magnetic head slider material comprised of a sintered body containing alumina and titanium carbide, in which an area percentage of an area of alumina crystal grains and titanium carbide crystal grains having a crystal grain size of not less than 200 nm nor more than 350 nm to an area of alumina crystal grains and titanium carbide crystal grains in a cut surface of the sintered body is not less than 80%.

Material for magnetic head slider, magnetic head slider, and method of producing material for magnetic head slider

The magnetic head slider material of the present invention is constituted by a sintered body containing 100 parts by weight of alumina, 20 to 150 parts by weight of titanium carbide and silicon carbide in total, and 0.2 to 9 parts by weight of carbon.

A flat panel display spacer has a sintered body containing A1O, TiC, MgO, and TiO, whereas the sintered body includes 35 to 55 wt % of MgO with respect to the total weight of A1O, TiC, MgO, and TiO.

Flat panel display spacer, method of manufacturing flat panel display spacer, and flat panel display

An alloy target comprises at least one rare earth metal element Tb, Dy, Gd, Sm, Nd, Ho, Tm, and Er with a substantial balance of a transition metal element such as Fe, Co and Ni, and has a substantially homogeneous sintered structure and a permeability of 3 or lower. The alloy target is fabricated by a process comprising steps of melting in a high-frequency furnace or crucible furnace, quenching, pulverization, and firing under pressure. After the alloy target has been used up, it is regenerated by mixing alloy powders (to be regenerated) obtained by the mechanical pulverization of the used-up target with the alloy powders obtained at the pulverization step of the aforesaid process to obtain a mixture, and firing the mixture under pressure.

Alloy target, its fabrication, and regeneration processes

A thermistor material comprising, in sintered form, (A) a matrix comprising aluminum oxide, silicon oxide, or the oxide of an element belonging to Group 2A in the Periodic Table, and (B) a conductive path forming substance comprising silicon carbide and/or boron carbide, wherein the volume ratio of silicon carbide to the matrix is up to about 1.24 is stable at elevated temperatures of 400.degree.-800.degree. C.

Thermistor materials and elements

A sintered body comprising on a weight basis, 100 parts of a mixture of 5-40% of titanium carbide and 95-60% alumina, and 0.01 to 5 parts of at least one oxide selected from the group consisting of gallium, barium, calcium, cerium, niobium, and strontium oxides is an improved material for magnetic head sliders. It is prepared by adding the oxide or carbonate of the specific metal to an alumina-titanium carbide mixture and hot press sintering the combined mixture.

Growing community of inventors

Tokyo, Japan

Yukio Kawaguchi