INPLANE ORIENTATION OF C-AXIS-ORIENTED BI2SR2CAN-1CUNO2N+4+DELTA THIN-FILMS ON ND-YALO3 SUBSTRATES

被引：9
作者：
TSUKADA, I
UCHINOKURA, K
机构：
[1] Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113
来源：
JOURNAL OF APPLIED PHYSICS | 1995年 / 78卷 / 01期
关键词：
D O I：
10.1063/1.360693
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In-plane orientation of thin-film Bi2Sr2Ca n-1CunO2n+4+δ superconductors on Nd:YAlO3 is investigated in detail. Thin films of c-axis-oriented Bi2Sr2Can-1CunO 2n+4+δ are grown in situ by molecular beam epitaxy with pure ozone as an oxidant. The in-plane orientation of the films was observed by reflection high-energy electron diffraction. A characteristic epitaxial relationship was found between Bi2Sr2Ca n-1CunO2n+4+δ (001) and Nd:YAlO 3 (001), and as a result, Bi2Sr2Ca n-1CunO2n+4+δ was grown without the a-b twinning structure, maintaining the relation Bi2Sr2Ca n-1CunO2n+4+δ [010] ∥Nd:YAlO 3[100]. This relationship is found to be independent of the phases (n) of the films. Moreover, it is affected by the steps running parallel to Nd:YAlO3 [100]. With increase of the step density by changing the misorientation angle from (001) toward [010], the in-plane orientation of Bi2Sr2Can-1CunO 2n+4+δ is rotated by 90°around its c-axis direction. The epitaxial relationship is discussed with respect to the anisotropic growth rate of Bi2Sr2Can-1CunO 2n+4+δ films. © 1995 American Institute of Physics.
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页码：364 / 371
页数：8
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