SYNCHROTRON X-RAY TOPOGRAPHY STUDIES OF TWIN STRUCTURES IN LANTHANUM ALUMINATE SINGLE-CRYSTALS

被引:26
作者
YAO, GD [1 ]
HOU, SY [1 ]
DUDLEY, M [1 ]
PHILLIPS, JM [1 ]
机构
[1] AT&T BELL LABS,MURRAY HILL,NJ 07974
基金
美国能源部;
关键词
D O I
10.1557/JMR.1992.1847
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
An extensive investigation of twin structures in lanthanum aluminate single crystals at room temperature has been undertaken using White Beam Synchrotron X-Ray Topography (WBSXRT). Twin configurations, directly observable via orientation contrast, were found to comprise both large-volume, macroscopic twins and thick twin lamellae. Positional shifts of twin domain images with respect to matrix images, arising from the mutual misorientation of diffraction vectors, were measured on x-ray topographic images recorded from the (220)rhom planes approximately parallel to the specimen surface and compared to calculated values in order to solve the twin laws in this system. The dominant twin operations were found to be (101)rhom, (011)rhom, and (112)rhom mirror reflections. The potential influence of the twins on the growth of epitaxial Ba2YCu3O7-delta thin films is discussed.
引用
收藏
页码:1847 / 1855
页数:9
相关论文
共 16 条
[1]   TRANSPORT CRITICAL CURRENT-DENSITY IN EPITAXIAL BI2SR2CACU2O8+X FILMS - EFFECTS OF THE SUBSTRATE TWINNING [J].
BALESTRINO, G ;
FOGLIETTI, V ;
MARINELLI, M ;
MILANI, E ;
PAOLETTI, A ;
PAROLI, P .
APPLIED PHYSICS LETTERS, 1990, 57 (22) :2359-2361
[2]  
BERKSTRESSER GW, 1991, J CRYST GROWTH, V109, P467, DOI 10.1016/0022-0248(91)90218-T
[3]   LANTHANIDE GALLATE PEROVSKITE-TYPE SUBSTRATES FOR EPITAXIAL, HIGH-TC SUPERCONDUCTING BA2YCU3O7-DELTA FILMS [J].
GIESS, EA ;
SANDSTROM, RL ;
GALLAGHER, WJ ;
GUPTA, A ;
SHINDE, SL ;
COOK, RF ;
COOPER, EI ;
OSULLIVAN, EJM ;
ROLDAN, JM ;
SEGMULLER, AP ;
ANGILELLO, J .
IBM JOURNAL OF RESEARCH AND DEVELOPMENT, 1990, 34 (06) :916-926
[4]   THZ TIME-DOMAIN SPECTROSCOPY OF HIGH-TC SUBSTRATES [J].
GRISCHKOWSKY, D ;
KEIDING, S .
APPLIED PHYSICS LETTERS, 1990, 57 (10) :1055-1057
[5]  
KELLY A, 1970, CRYSTALLOGRAPHY CRYS, P293
[6]   X-RAY TOPOGRAPHY OF TWINNED CRYSTALS [J].
KLAPPER, H .
PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS, 1987, 14 :367-401
[7]   X-RAY TOPOGRAPHIC INVESTIGATIONS OF PHASE-TRANSITIONS IN CRYSTALS [J].
KLAPPER, H ;
ROBERTS, KJ ;
GOTZ, D ;
HERRES, N .
JOURNAL OF CRYSTAL GROWTH, 1983, 65 (1-3) :621-636
[8]   EPITAXIAL-GROWTH AND CRITICAL CURRENT-DENSITY OF THIN-FILMS OF YBA2CU3O7-X ON LAALO3 SUBSTRATES [J].
MOGROCAMPERO, A ;
TURNER, LG ;
HALL, EL ;
GARBAUSKAS, MF ;
LEWIS, N .
APPLIED PHYSICS LETTERS, 1989, 54 (26) :2719-2721
[9]   THERMAL-ANALYSIS OF RARE-EARTH GALLATES AND ALUMINATES [J].
OBRYAN, HM ;
GALLAGHER, PK ;
BERKSTRESSER, GW ;
BRANDLE, CD .
JOURNAL OF MATERIALS RESEARCH, 1990, 5 (01) :183-189
[10]   COMPARISON OF BA2YCU3O7-DELTA FILMS ON NDGAO3 AND LAALO3 [J].
PHILLIPS, JM ;
SIEGAL, MP ;
PERRY, CL ;
MARSHALL, JH .
IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (02) :1006-1008