A-AXIS ORIENTED BI-SR-CA-CU-O THIN-FILMS DEPOSITED ON (1 0 0) MGO SUBSTRATES BY METALORGANIC CHEMICAL VAPOR-DEPOSITION

被引：18

作者：

SUGIMOTO, T

NAKAGAWA, M

SHIOHARA, Y

TANAKA, S

机构：

[1] Superconductivity Research Laboratory, ISTEC, Koto-ku, Tokyo, 135

来源：

PHYSICA C | 1992年 / 192卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(92)90750-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

a-Axis oriented Bi-Sr-Ca-Cu-O thin films were prepared at substrate temperatures of 720-850-degrees-C on (1 0 0) MgO substrates by MOCVD. The a-axis oriented Bi-Sr-Ca-Cu-O thin films were found to grow preferentially at lower substrate temperatures and faster deposition rates. The formation of the a-axis oriented domains was found to be preferential at the ratios of Cu/(Sr + Ca) and Bi/(Sr + Ca) lower than the stoichiometric composition of the 2212 and 2223 phases, while the c-axis oriented domains were found to be preferentially formed at the ratios of Cu/(Sr + Ca) and Bi/(Sr + Ca) higher than the stoichiometric composition of the 2212 and 2223 phases. The surface morphology was found to have characteristic triangular layered grains from the SEM observations, and these grains were aligned with a long dimension along the a- or the b-axis of the MgO substrate.

引用

页码：108 / 114

页数：7

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