95 K NdBCO Single Crystal Grown in Air by Controlling Liquid Composition
Authors:
- Xin YaoXYXin Yao
- Yuh ShioharaYSYuh Shiohara
- 1 April 1997
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 36 (4A) , L400
Abstract
Using the crystal pulling method, we achieved high superconducting transition temperatures (T c) of Nd1+ x Ba2- x Cu3O6+δ (NdBCO) single crystals in air. By controlling the liquid composition of the ratio of Ba to Cu (Ba/Cu) at approximately 0.80, the NdBCO crystal displays high T c of about 95 K with a sharp transition width ΔT of less than 0.5 K. The high Ba/Cu in the liquid leads to the low amount of substitution of Nd for Ba, and consequently results in high superconducting properties. This finding suggests that the Ba/Cu in the liquid is a very important processing parameter for the NdBCO system.Keywords
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