High-quality superconducting thin films of Bi2Sr2Ca2Cu3O(x) grown in situ by metalorganic CVD
Abstract
The preparation and properties of c-axis-oriented single-phase Bi2Sr2Ca2Cu3O(x) films grown in situ without postannealing by MOCVD are reported. The films have the highest Tc and Jc at 77 K reported so far for Bi-Sr-Ca-Cu-O films grown in situ; one film had a zero-resistance Tc of 97 K and a Jc of 3.8 xc 10 exp 5 A/sq cm at 77 K in zero magnetic field. This film showed little degradation of Jc in magnetic fields of up to 8 T applied parallel to the crystallographic a-b plane. The magnetic-field dependence of Jc and observed surface morphologies strongly suggest that these as-grown films have no weak links, which is a promising characteristic for device applications.
- Publication:
-
Nature
- Pub Date:
- January 1992
- DOI:
- 10.1038/355327a0
- Bibcode:
- 1992Natur.355..327E
- Keywords:
-
- Copper Oxides;
- Current Density;
- High Temperature Superconductors;
- Metalorganic Chemical Vapor Deposition;
- Superconducting Films;
- Thin Films;
- Bismuth Oxides;
- Calcium Oxides;
- Mixed Oxides;
- Strontium Compounds;
- Solid-State Physics