X-RAY PHOTOELECTRON-SPECTROSCOPY STUDIES OF 7 K-PHASE BI-SYSTEM SINGLE-CRYSTALS

被引：2
作者：
KISHIDA, S
TOKUTAKA, H
FUTO, W
FUJIMOTO, H
NISHIMORI, K
ISHIHARA, N
机构：
[1] Department of Electrical and Electronic Engineering, Tottori University, Koyama, Tottori
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1991年 / 30卷 / 05期
关键词：
BI-PB-SR-CA-CU-O; SINGLE CRYSTAL; 7 K PHASE; X-RAY PHOTOELECTRON SPECTROSCOPY; SURFACE COMPOSITION; CHEMICAL BOND NATURE;
D O I：
10.1143/JJAP.30.926
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The Bi-system single crystals with c-axis unit cell length of approximately 24 angstrom, i.e., Bi-Sr-Cu-O (BSCO), Bi-Pb-Sr-Cu-O (BPSCO), Bi-Sr-Ca-Cu-O (BSCCO), and Bi-Pb-Sr-Ca-Cu-O (BPSCCO) single crystals, were prepared using the starting materials of various compositions by the self-flux method. X-ray photoelectron spectroscopy (XPS) measurements from the air-cleaved surfaces of the single crystals were carried out. From the results of the surface composition analyses, we found that Pb occupied a part of the Bi site in the BPSCO single crystal and Ca occupied a part of the Sr site in the BSCCO single crystal. The chemical bond natures of Sr, Cu and O in the BSCO crystal seem to be changed by doping with Pb and/or Ca.
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页码：926 / 928
页数：3
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