Formation and structure of misfit dislocations at the La2Zr2O7-Y2O3-stabilized ZrO2 (001) reaction front during vapour-solid reaction

被引：14

作者：

Lu, CJ ^{[1
]}

Senz, S ^{[1
]}

Hesse, D ^{[1
]}

机构：

[1] Max Planck Inst Microstruct Phys, D-06120 Halle Saale, Germany

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2002年 / 82卷 / 04期

关键词：

D O I：

10.1080/09500830110118058

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

La-2 Zr2O7 (LZO)-based pyrochlore islands were grown on a Y2O3-stabilized ZrO2 (YSZ) (001) single-crystal surface by the reaction between La2O3 vapour and the crystal. A network of interfacial edge dislocations with line directions [100] and [010] and Burgers vectors. (a(s)/2)[101] and (a(s)/2)[011] respectively (a(s) being the lattice parameter of the YSZ) was observed at the moving LZO-YSZ reaction front. The interface-parallel component of the Burgers vectors accommodates the LZO-YSZ lattice mismatch of +5.0%, while the perpendicular component causes a slight tilt of the LZO lattice with respect to the YSZ lattice. The dislocation half-loops nucleate and glide on inclined {101} planes at the edges of the four corners of the growing islands.

引用

页码：167 / 174

页数：8

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