A new procedure for the isolation of large YBCO superconducting single crystals

A new procedure, the liquid flow method, is reported for the separation of large YBCO superconducting single crystals from the flux. We used a shallow alumina boat with a slope of 20°–30°. The slope of the boat could be changed without disturbing the temperature. Single crystals up to 5–10 mm have b...

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Veröffentlicht in:	Journal of crystal growth 1990-11, Vol.106 (2), p.487-489
Hauptverfasser:	Wang, Yaoshui, Schreurs, L.W.M., van der Linden, P., Li, Yuan, Bennema, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Methods of crystal growth physics of crystal growth Physics
Online-Zugang:	Volltext
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Zusammenfassung:	A new procedure, the liquid flow method, is reported for the separation of large YBCO superconducting single crystals from the flux. We used a shallow alumina boat with a slope of 20°–30°. The slope of the boat could be changed without disturbing the temperature. Single crystals up to 5–10 mm have been obtained; the superconducting transition occurs at about 90 K. The liquid flow method is one of the best techniques for a smooth separation of the flux and the detachment of the as-grown crystals from the crucible.
ISSN:	0022-0248 1873-5002
DOI:	10.1016/0022-0248(90)90097-5