SCREW DISLOCATION MEDIATED GROWTH OF SPUTTERED AND LASER-ABLATED YBA2CU3O7-DELTA FILMS

被引：128

作者：

SCHLOM, DG ^{[1
]}

ANSELMETTI, D ^{[1
]}

BEDNORZ, JG ^{[1
]}

BROOM, RF ^{[1
]}

CATANA, A ^{[1
]}

FREY, T ^{[1
]}

GERBER, C ^{[1
]}

GUNTHERODT, HJ ^{[1
]}

LANG, HP ^{[1
]}

MANNHART, J ^{[1
]}

机构：

[1] UNIV BASEL, INST PHYS, CH-4056 BASEL, SWITZERLAND

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1992年 / 86卷 / 02期

关键词：

D O I：

10.1007/BF01313822

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

By imaging the as-grown surfaces of sputtered and laser-ablated YBa2Cu3O7-delta films with scanning tunneling microscopy (STM), we have directly observed spiral-shaped growth terraces which emanate from screw dislocations. The density of screw dislocations was observed to decrease with increasing growth temperature and substrate misorientation. The surface structures observed by STM together with cross-sectional transmission electron microscope (TEM) images provide insights into the mechanisms of crystal growth operative during the formation of YBa2Cu3O7-delta films grown using these two widespread techniques.

引用

页码：163 / 175

页数：13

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