Application of Esr to HIGH-TC Superconductors and Related Materials V:. a New Method of Making YBa2Cu3Oζ and its Superconductive Characteristics
Abstract
A new method of making superconductor of YBa2Cu3Oζ was developed. The fundamental technology of the method is to take advantage of Ba-diffusion into YCu3 alloy. Two kinds of samples of the YBa2Cu3Oζ system were prepared, and their superconductivity was confirmed by non-resonant microwave absorption and the Meissner effect. In the first kind, the thin alloy of YCu3 and BaCO3 (powder) were pressed into pellet, and sintered in air at 900°C for 24 hours. In the second kind, a rod of YCu3 alloy was imbedded in a matrix of BaCO3 powder, and they were calcined at 900°C for 24 hours in air. Both samples were confirmed to be superconductors of about Tc≃90 K.
- Publication:
-
Modern Physics Letters B
- Pub Date:
- 1999
- DOI:
- 10.1142/S0217984999000105
- Bibcode:
- 1999MPLB...13...71S