발간논문

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Vol.29, No.5, 507 ~ 514, 1991
Title
A Study on the single Crystal Growing of Y1Ba2Cu3O7-δSuperconductor from the High temperature Solution
김한Han Kim, 수승기Seung Ki Joo
Abstract
Single crystal growing of YBCO superconductor was attempted using a BaO-CuO flux method. 123 superconducting powders mixed with 28 BaCO₃-72 CuO flux in variable compositions were held at 1030℃ for 10 hours and cooled at the rate of 5∼30℃/hr. In the proper composition of melt and cooling rate, YBCO single crystals with the mean size of 1.5 × 1. 5 × 0.1㎣ could be obtained and had grown on the wall of crucible up to the size of 2.5 × 3 × 0.1㎣. YBCO single crystals had a shape of very thin plate with well developed (001) crystal face and were characterized by EDS, XRD, and Laue method.
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