Seoul National University

Sunam Co., Ltd.

Samsung Sdi Co., Inc.

Sang-Im Yoo

Jae-Phil Cho

Seung-Hyun Moon

Geo-Myung Shin

Seung-hyun Moon

Hun-Ju Lee

Hong-Soo Ha

Insung Park

Chan-Soo Kim

Provided is a method of forming a superconducting wire, the method including forming a superconducting precursor film on a substrate, the super conducting precursor film containing Re, Ba, and Cu having a composition in which Ba is poor and Cu is rich compared to stoichiometric ReBCO(GdBaCuO, 0&#x2264;y&#x2264;6, Re: Rare earth element), heating the substrate to melt the superconducting precursor film, providing an oxygen gas having an oxygen partial pressure of about 10 mTorr to about 200 mTorr on the molten superconducting precursor film to form a superconducting layer including an epitaxial superconductor biaxially aligned only in the c-axis direction perpendicular to the substrate, and cooling the substrate.

Method of forming superconducting wire

Provided is a method of forming a ceramic wire. In the method, a ceramic precursor film is deposited on a wire substrate. Then, the wire substrate on which the ceramic precursor film is deposited is treated by heating. For treating the wire substrate by heating, a temperature of the wire substrate and/or an oxygen partial pressure of the wire substrate are controlled such that the ceramic precursor film is in a liquid state and an epitaxy ceramic film is formed from the liquid ceramic precursor film on the wire substrate.

Method of forming ceramic wire, system of forming the same, and superconductor wire using the same

A method for forming a precursor solution for metal organic deposition includes dissolving an additive-free first precursor composed of a rare earth element, a second precursor comprising barium, and a third precursor composed of copper into an acid to form a compound solution; dissolving the compound solution into a solvent to form a pre-precursor solution; and evaporating the solvent from the pre-precursor solution to form a precursor solution having an increased viscosity; wherein at least one of the first precursor, the second precursor, and the third precursor is dissolved into a fluorine-free acid. A method for forming a superconducting thick film from the above precursor solution includes forming a thick film by a one-time coating of the precursor solution having an increased viscosity onto a biaxially-textured base followed by heat treating to form the superconducting thick film having a thickness of about 0.2 &#x3bc;m or more and having no cracking.

Method of forming a precursor solution for metal organic deposition and method of forming superconducting thick film using the same

Positive active material for rechargeable lithium battery and method of preparing same

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Seoul, South Korea

Sang-Im Yoo