DIRECT OBSERVATION OF STRUCTURAL DEFECTS IN LASER-DEPOSITED SUPERCONDUCTING Y-BA-CU-O THIN-FILMS

被引：63

作者：

RAMESH, R

HWANG, DM

VENKATESAN, T

RAVI, TS

NAZAR, L

INAM, A

WU, XD

DUTTA, B

THOMAS, G

MARSHALL, AF

GEBALLE, TH

机构：

[1] RUTGERS STATE UNIV,PISCATAWAY,NJ 08854

[2] MIDDLEBURY COLL,MIDDLEBURY,VT 05753

[3] UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720

[4] UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,NATL CTR ELECTRON MICROSCOPY,DIV MAT & CHEM SCI,BERKELEY,CA 94720

[5] STANFORD UNIV,STANFORD,CA 94305

来源：

SCIENCE | 1990年 / 247卷 / 4938期

关键词：

D O I：

10.1126/science.247.4938.57

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The defect structure of in situ pulsed, laser-deposited, thin films of the high-transition temperature superconductor Y-Ba-Cu-O has been observed directly by atomic resolution electron microscopy. In a thin film with the nominal composition YBa2Cu3O7 (123), stacking defects corresponding to the cationic stoichiometry of the 248, 247, and 224 compounds have been observed. Other defects observed indude edge dislocations and antiphase boundaries. These defects, which are related to the nonequilibrium processing conditions, are likely to be responsible for the higher critical currents observed in these films as compared to single crystals.

引用

页码：57 / 59

页数：3

共 8 条

[1] THE MICROSTRUCTURE OF HIGH - CRITICAL CURRENT SUPERCONDUCTING FILMS [J].