Properties of Yb-Ba-Cu-O superconductors prepared by a plasma-arc melting and rapid quenching method

A PMQ (plasma-arc melting and rapid quenching) method has been successfully developed to obtain homogeneous and highly dense Yb-Ba-Cu-O compounds through the crystallization of the superconducting phase from the amorphouslike state. The maximum T c of 91 K and packing density of 7.14 g/cm 3 (98% of...

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Veröffentlicht in:	Japanese Journal of Applied Physics 1990-04, Vol.29 (4), p.L580-L582
Hauptverfasser:	KAMINO, M, TAKAHSHI, K, YOKOO, T, YOSHISATO, Y, NAKANO, S
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Physics Properties of type I and type II superconductors Superconductivity
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	A PMQ (plasma-arc melting and rapid quenching) method has been successfully developed to obtain homogeneous and highly dense Yb-Ba-Cu-O compounds through the crystallization of the superconducting phase from the amorphouslike state. The maximum T c of 91 K and packing density of 7.14 g/cm 3 (98% of the theoretical density 7.27 g/cm 3 ) were produced by this method. Furthermore, a large activation energy of 1.5 eV was observed by magnetic relaxation measurements.
ISSN:	0021-4922 1347-4065
DOI:	10.1143/jjap.29.l580