Dissolution and resolidification of SmBa/sub 2/Cu/sub 3/O/sub 7-y/ seed during top seeded melt texturing of YBa/sub 2/Cu/sub 3/O/sub 7-y/

Author

Jee, Y.A. ; Gye-Won Hong ; Chan-Joong Kim ; Tae-Hyun Sung

Author_Institution

Supercond. Res. Lab., Korea Atomic Energy Res. Inst., Taejon, South Korea

Volume

9

Issue

2

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

2097

Lastpage

2100

Abstract

During top-seeded melt growth of a YBa/sub 2/Cu/sub 3/O/sub 7-y/ (Y123) single-domain crystal, seed dissolution occurred while the seed was in contact with Ba-Cu-O liquid, and then the dissolved parts were resolidified during cooling. The growth mode of the Y123 crystal was directly affected by the resolidification process of the dissolved part. When the melted part of the seed was resolidified to a polycrystal, Y123 grew also as a polycrystalline form. In contrast, when the dissolved part of the seed completely recovered its mother orientation during cooling, a single-domain Y123 crystal could be obtained. The dissolution behavior of the SmBa/sub 2/Cu/sub 3/O/sub 7-y/ (Sm123) seed is explained in terms of the solubility of samarium in Ba-Cu-O liquid. The resolidification mode of the melted part is discussed in terms of the Sm content within the interdiffusion layer of Sm and Y.

Keywords

barium compounds; chemical interdiffusion; crystal growth from melt; dissolving; high-temperature superconductors; melt texturing; solidification; yttrium compounds; Sm content; Sm123 seed; SmBa/sub 2/Cu/sub 3/O/sub 7/; YBa/sub 2/Cu/sub 3/O/sub 7/; dissolution; growth mode; interdiffusion layer; polycrystalline form; resolidification; single-domain crystal; solubility; top seeded melt texturing; Crystallography; Crystals; Heating; Performance analysis; Performance evaluation; Shape; Smoothing methods; Temperature; Testing; X-ray scattering;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.784880

Filename

784880