Nec Corporation

Nippon Steel Corporation

Kanegafuchi Chemical Industry Co., Ltd.

Seisan Kaihatsu Kagaku Kenkyusho

Matsushita Electric Industrial Co., Ltd.

Tdk Corporation

Ube Industries, Inc.

Tosoh Corporation

Toyo Boseki Kabushiki Kaisha

Nippon Mining Co., Ltd.

Kazuto Hirata

Kenji Iijima

Toshio Takada

Takahito Terashima

Kazunuki Yamamoto

Yoshichika Bando

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

Kazuto Hirata