Superconducting substrate structure and a method of producing such structure
First Claim
1. A superconducting (HTS) ground plane for epitaxial growth of multilayers thereon, wherein the substrate structure comprises a composite substrate structure having a first substrate layer and a second substrate layer, each substrate layer covered by a HTS film on at least one side, which HTS films are bonded together through annealing to form a buried superconducting layer, one of the substrate layers being polished to form a smooth insulating layer adjacent to an HTS layer.
1 Assignment
0 Petitions
Accused Products
Abstract
A superconducting substrate structure with a high temperature superconducting (HTS) ground plane, for epitaxial growth of multilayers thereon is provided. The substrate structure includes a composite substrate structure with a first and a second substrate layer each covered by an HTS film, which HTS films are bonded together through annealing to form a buried superconducting layer wherein one of the substrate layers is polished to form a smooth insulating layer adjacent to an HTS layer. A method of producing a superconducting substrate structure is provided including the steps of arranging two substrate layers on which HTS films are provided such that the HTS films come in close contact to one another, applying a high pressure in an oxygen atmosphere and at an elevated temperature such that the HTS films are annealed and bonded together, and subsequently polishing one of the substrate layers to form a smooth insulator.
-
Citations
19 Claims
- 1. A superconducting (HTS) ground plane for epitaxial growth of multilayers thereon, wherein the substrate structure comprises a composite substrate structure having a first substrate layer and a second substrate layer, each substrate layer covered by a HTS film on at least one side, which HTS films are bonded together through annealing to form a buried superconducting layer, one of the substrate layers being polished to form a smooth insulating layer adjacent to an HTS layer.
- 9. A multilayer structure comprising a number of alternating high temperature superconducting (HTS) films and insulating layers epitaxially grown an a substrate structure comprising a superconducting ground plane, the substrate structure comprising a composite substrate structure having a first substrate layer and a second substrate layer, each substrate layer covered by a HTS film on at least one side thereof respectively, which HTS films are bonded together through annealing to form a buried HTS layer, the substrate layer on which the HTS films and insulating layers are grown being polished to form a smooth insulating layer.
-
14. A method of producing a substrate structure with a superconducting ground plane comprising the steps of:
-
providing a first and a second substrate layer;
covering each of said first and second substrate layers with a thin high temperature superconducting (HTS) film, respectively;
arranging of the substrate layers such that the thin HTS films are in close contact to one another;
bonding the HTS films together through annealing in oxygen at a high temperature and under a high pressure to form a buried HTS layer; and
polishing one of the substrate layers on a side opposite to the buried HTS layer to form a smooth insulator. - View Dependent Claims (15, 16, 17, 18)
-
-
19. A method of producing a multilayer structure comprising high temperature superconducting (HTS) films and insulating films, comprising the steps of:
-
providing a first and a second substrate layer;
covering each of said first and second substrate layers with a thin HTS film respectively;
arranging the substrate layers such that the thin HTS films are in close contact to one another, bonding the HTS films together through annealing in oxygen at a high temperature and under a high pressure to form a buried HTS layer;
polishing one of the substrate layers on a side opposite to the buried HTS layer to form a smooth insulator; and
epitaxially and alternatingly growing HTS films and insulating layers on the smooth insulator.
-
Specification