TEXTURE AND TRANSPORT IN SPRAY PYROLYZED TLBA2CA2CU3O9 THICK-FILMS

被引：7

作者：

TKACZYK, JE ^{[1
]}

SUTLIFF, JA ^{[1
]}

DELUCA, JA ^{[1
]}

BEDNARCZYK, PJ ^{[1
]}

BRIANT, CL ^{[1
]}

WANG, ZL ^{[1
]}

GOYAL, A ^{[1
]}

KROEGER, DM ^{[1
]}

LOWNDES, DH ^{[1
]}

SPECHT, ED ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,OAK RIDGE,TN 37831

来源：

JOURNAL OF MATERIALS RESEARCH | 1995年 / 10卷 / 09期

基金：

美国能源部;

关键词：

D O I：

10.1557/JMR.1995.2203

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electron backscattering pattern technique has been applied to the microstructural investigation of Tl(1223) thick films formed by vapor-phase thallination of Ag-containing Ba-Ca-Cu-oxide precursors. For samples grown on polycrystalline YSZ, considerable biaxial alignment is found in localized, multigrain regions as wide a 100 mu m or more. However, on scales above 1 mm the overall texture remains only uniaxial with the c-axes (i.e., [001]) aligned perpendicular to the plane of the substrate. On single-crystal KTaO3 an epitaxial relationship is evident which persists to the surface of a 3 mu m thick film. Modest variations in the processing protocol yield films containing grains oriented with the c-axis in the plane, resulting in the degradation of transport properties. The data suggest a growth mode in which sparse nucleation occurs at the substrate followed by rapid lateral crystallization.

引用

页码：2203 / 2210

页数：8

共 32 条

[1] WEAK-LINK-FREE BEHAVIOR OF HIGH-ANGLE YBA2CU3O7-DELTA GRAIN-BOUNDARIES IN HIGH MAGNETIC-FIELDS [J].