摘要:
Bi-Ti-O or Bi-W-O thin film of stable crystal phase is manufactured by forming a Bi-Ti-O of Bi-W-O thin film periodically in an environment including activated oxygen. A layered structure of Bi-Sr-Ca-Cu-O thin films and Bi-Ti-O or Bi-W-O thin films is manufactured by forming a Bi-Ti-O of Bi-W-O thin film periodically in an environment including activated oxygen. A stable superconductor thin film of high superconducting transition temperature is manufactured reproducibly by layering alternately a layered oxide superconductor thin film of Tl-Ba-Ca-Cu-O system and a Bi-W-O insulator thin film.
摘要:
Bi-Ti-O or Bi-W-O thin film of stable crystal phase is manufactured by forming a Bi-Ti-O of Bi-W-O thin film periodically in an environment including activated oxygen. A layered structure of Bi-Sr-Ca-Cu-O thin films and Bi-Ti-O or Bi-W-O thin films is manufactured by forming a Bi-Ti-O of Bi-W-O thin film periodically in an environment including activated oxygen. A stable superconductor thin film of high superconducting transition temperature is manufactured reproducibly by layering alternately a layered oxide superconductor thin film of Tl-Ba-Ca-Cu-O system and a Bi-W-O insulator thin film.
摘要:
A Josephson device, comprising a junction formed by forming the first layer-shaped oxide superconductor thin film including a plurality of Cu-O layers on a substrate, a barrier layer thereon and the second layer-shaped oxide superconductor thin film on the barrier layer. The Josephson device according to the present invention is manufactured by forming the first layer-shaped oxide superconductor thin film on a substrate, forming a barrier layer in the same vacuum chamber, defining patterns to said barrier layer and said first layer-shaped oxide superconductor thin film, forming an interlayer insulating film on said barrier layer, removing said interlayer insulating film in a region serving as a junction, effecting exposure to oxygen plasma, forming the second layer-shaped oxide superconductor thin film in contact with a part of the surface of said barrier layer and defining patterns to said second layer-shaped oxide superconductor thin film.
摘要:
A magnetic control device including an antiferromagnetic layer, a magnetic layer 2 placed in contact with one side of the antiferromagnetic layer 1, and an electrode placed in contact with another side of the antiferromagnetic layer 1, wherein the direction of the magnetization of the magnetic layer 2 is controlled by voltage applied between the magnetic layer 2 and the electrode 3. In particular, when an additional magnetic layer 5 is further laminated on the magnetic layer 2 placed in contact with the antiferromagnetic layer 1 via a non-magnetic layer 4, the direction of the magnetization of the controlled magnetic layer can be detected as a change in the electric resistance. Since such a magnetic control device, in principle, responds to the electric field or magnetic field, it forms a magnetic component capable of detecting an electric signal or a magnetic signal. In this case, the direction of the magnetization basically is maintained until the next signal is detected, so that such a device also can form an apparatus. Thus, a magnetic control device capable of controlling the magnetization with voltage and magnetic component and a memory apparatus using the same are provided.
摘要:
Bi-Ti-O or Bi-W-O thin film of stable crystal phase is manufactured by forming a Bi-Ti-O of Bi-W-O thin film periodically in an environment including activated oxygen. A layered structure of Bi-Sr-Ca-Cu-O thin films and Bi-Ti-O or Bi-W-O thin films is manufactured by forming a Bi-Ti-O of Bi-W-O thin film periodically in an environment including activated oxygen. A stable superconductor thin film of high superconducting transition temperature is manufactured reproducibly by layering alternately a layered oxide superconductor thin film of Tl-Ba-Ca-Cu-O system and a Bi-W-O insulator thin film.
摘要:
A field-effect type superconducting device includes a channel layer (2). The channel layer includes Bi-based oxide compound containing Cu. A source electrode (5) contacts the channel layer. A drain electrode (6) contacts the channel layer. A gate insulating film (3) made of insulating material extends on on the channel layer. A gate electrode (4) extends on the gate insulating film. Also disclosed is a superconducting device having a control electrode (14) extending on the insulating film (3) and having a constricted portion (50B).
摘要:
A thin-film superconductor includes a substrate (1), a ferroelectric film (2), and a superconducting oxide film (3). The ferroelectric film extends on the substrate. The ferroelectric film is made of a crystal containing Bi and O. The superconducting oxide film extends on the ferroelectric film, and containing Bi, Cu, and an alkaline-earth metal element. The superconducting oxide film may contain at least two different alkaline-earth metal elements.