ISSN:
1573-4803
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Maschinenbau
Notizen:
Abstract Domain growth of bulk partially melted Nd1+xBa2−xCu3O7−δ in air was found to be severely limited by liquid-phase segregation and losses. The use of a reduced oxygen pressure greatly improved the stoichiometry control, leading to the formation of well-developed domains and enhanced superconducting properties. Direct nucleation of Nd1+xBa2−xCu3O7−δ from the liquid phase by dissolution of Nd2BaCuO5 and a spiral growth mechanism in three perpendicular directions of the platelets stacked in the domains, are suggested.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00352667
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