Nec Corporation

Nippon Steel Corporation

Kanegafuchi Chemical Industry Co., Ltd.

Seisan Kaihatsu Kagaku Kenkyusho

Tdk Corporation

Ube Industries, Inc.

Tosoh Corporation

Toyo Boseki Kabushiki Kaisha

Nippon Mining Co., Ltd.

Matsushita Electric Industrial Co., Ltd.

Matsushita Electric Inductris Co., Ltd.

Takahito Terashima

Toshio Takada

Kenji Iijima

Yoshichika Bando

Kazuto Hirata

Kazunuki Yamamoto

A process for forming a single crystal superconducting LnA.sub.2 Cu.sub.3 O.sub.7-x film, wherein Ln is at least one rare earth element and A is at least one alkaline earth element, is disclosed, which comprises simultaneously evaporating Ln, A and Cu in an atomic ratio of about 1:2:3 from discrete evaporation sources of Ln, A and Cu onto a heated substrate in a vacuum vessel while blowing an oxygen gas onto the substrate to form an oxygen-containing atmosphere, thereby forming the single crystal superconducting film on the substrate.

Method for producing single crystal superconducting LnA.sub.2 Cu.sub.3

A ferroelectric thin film consisting of a single crystal of BaTiO.sub.3 which has a perovskite structure is produced by a method comprising evaporating Ba and Ti in an atomic ratio of 1:1 from discrete evaporation sources of Ba and Ti to deposit them on a substrate in a vacuum deposition vessel while supplying a small amount of an oxygen gas to the reactor.

Single crystal ferroelectric barium titanate films

A laminated film comprising at least two thin films of single crystal LnBa.sub.2 Cu.sub.3 O.sub.7-x wherein Ln is Y or one of lanthanoids except Pr and Tb having the (001) plane in the direction parallel with the film surface and at least one continuous thin film of Y.sub.2 O.sub.3 which has a thickness of not larger than 100 .ANG. and the (001) plane in the direction parallel with the film surface and is interposed between a pair of said thin films of single crystal LnBa.sub.2 Cu.sub.3 O.sub.7-x, wherein the thin films of single crystal LnBa.sub.2 Cu.sub.3 O.sub.7-x has good superconductive properties.

Laminated film

A laminated film comprising a thin film of single crystal YBa.sub.2 Cu.sub.3 O.sub.7-x having the (001) plane in the direction parallel with the film surface and a continuous insulating ultrathin layer of MgO which is formed on said superconductor film and has a thickness of not larger than 10.ANG. and the (001) plane in a direction parallel with the film surface is provided.

Laminated film and method for producing the same

Growing community of inventors

Kyoto, Japan

Takahito Terashima