Monocrystalline high temperature superconductor
Abstract
Crystal growth of YBa2Cu3O7 high temperature superconductors is discussed. The lack of a proper crucible material, the tetragonal/orthotrombic phase transformation twinning, and the necessity of oxygen loading make it difficult to grow a perfect monocrystal. The present most favorable growing process is a quasi crucible free method. Working under microgravity is shown to be of interest when growing high temperature superconductor crystals. In such conditions greater melts can be floated without crucible material through an ultrasonic field. Perfect monocrystals can be obtained by a slow cooling.
- Publication:
-
Microgravity: Conference Summaries and Forum Lectures
- Pub Date:
- August 1990
- Bibcode:
- 1990migr.conf...85A
- Keywords:
-
- Crystal Growth;
- High Temperature Superconductors;
- Melts (Crystal Growth);
- Microgravity Applications;
- Reduced Gravity;
- Single Crystals;
- Ultrasonics;
- Barium Oxides;
- Copper Oxides;
- Mixed Oxides;
- Yttrium Oxides;
- Solid-State Physics