Expedited Award for Novel Research: Directional Solidification of High-Tc Superconductors

本项目研究高温陶瓷超导材料的加工，以克服低电流密度的电流限制。所采用的方法是产生没有晶界或晶界或相界沿生长方向排列的凝固组织。定向凝固研究将采用a)激光加热浮区装置和b)高温、高梯度定向凝固炉。该工作将为高温超导材料晶体生长的凝固提供基础依据。

This project deals with the processing of high-temperature ceramic superconducting material to overcome the current limitation of low current density. The approach adopted is to produce selected solidification microstructure that are free of grain boundaries or with grain boundaries or phase boundaries aligned in the growth direction. The directional solidification studies will be made using a) a laser heated floating zone apparatus, and b) a high- temperature, high gradient directional solidification furnace. This work will provide the fundamental basis of solidification to crystal growth of high-temperature superconducting material.