INFLUENCE OF Y2BACUO5 PARTICLES ON THE GROWTH-MORPHOLOGY OF PERITECTICALLY SOLIDIFIED YBA2CU3O7-X

被引：75

作者：

SCHMITZ, GJ ^{[1
]}

LAAKMANN, J ^{[1
]}

WOLTERS, C ^{[1
]}

REX, S ^{[1
]}

GAWALEK, W ^{[1
]}

HABISREUTHER, T ^{[1
]}

BRUCHLOS, G ^{[1
]}

GORNET, P ^{[1
]}

机构：

[1] IPHT,D-07743 JENA,GERMANY

来源：

JOURNAL OF MATERIALS RESEARCH | 1993年 / 8卷 / 11期

关键词：

D O I：

10.1557/JMR.1993.2774

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Modifications of a recent model by Izumi et al.1 on diffusion controlled growth of YBa2Cu3O7-x (123) superconductors are proposed, taking into account especially the engulfment process of the Y2BaCuO5 (211) particles into the solidifying 123 interface. The proposed modifications are evidenced by experimental results and applied to explain microstructural features of the 123 superconducting material. In particular, the 1:1 correlation between 123 platelet thickness (planar defect spacing) and 211 particle size as described by Jin et al.2 is explained by an observed bridge growth resulting in a zipper-like mechanism. By this mechanism the platelets grow together in an oriented way leading to a quasi single crystalline material.

引用

页码：2774 / 2779

页数：6

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