Surface Analysis of YBa2Cu3Ox and Bi-Sr-Ca-Cu-O Superconductors by Auger Electron Spectroscopy
- 1 February 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (2A) , L222-225
- https://doi.org/10.1143/jjap.28.l222
Abstract
The YBa2Cu3O x superconductors show critical temperatures at around 90 K. Although they are prepared from the different starting materials, they however exhibit similar intensities of AES spectra. For the superconductors of Bi-Sr-Ca-Cu-O and (Bi, Pb)-Sr-Ca-Cu-O, the AES intensity ratios of Ca/Sr increase when their critical temperatures increase. When the AES intensity ratios are transformed into the composition ratios using the sensitivity factor, the volume fractions of the phases of the critical temperatures (7 K, 80 K and 110 K) can be estimated from these ratios and the ideal composition ratio of each phase.Keywords
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