Acta Metall Sin  1991, Vol. 27 Issue (5): 130-135    DOI:

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X-RAY PHOTOELECTRON SPECTROSCOPY OF HIGH Tc SUPERCONDUCTOR YBa_2 Cu_3 O_(7-x)

TIAN Lu;WANG Wenhao;GONG Yandong;SUN Yuzhen;LIN Shuzhi Institute of Metal Research; Academia Sinica; Shenyang

TIAN Lu;WANG Wenhao;GONG Yandong;SUN Yuzhen;LIN Shuzhi Institute of Metal Research; Academia Sinica; Shenyang. X-RAY PHOTOELECTRON SPECTROSCOPY OF HIGH Tc SUPERCONDUCTOR YBa_2 Cu_3 O_(7-x). Acta Metall Sin, 1991, 27(5): 130-135.

Abstract References Related Articles Recommended Metrics Download:  PDF(518KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The XPS spectra of superconducting (123-orthorhombic structure) and non-superconducting (123-tetragonal structure) YBa_2Cu_3O_(7-x). ceramics were obtained at room temperature and 130 K in RIBER LAS 3000 surface analysis system, in which a sample cooling stage and a surface cleaning scraper, both made by the authors'own, were installed. No evidence of Cu~(3+) was found. The O1s shows double lines.They are attributed to O1 and O4 with higher binding energy and to O2 and O3 with lower binding energy respectively, and it was confirmed by calculation of SW-X_α method. The differences and changes in valence states of Y, Ba, Cu and O in both samples were discussed. Key words:  YBaCuO      superconductor      low temperature      XPS      Received:  18 May 1991      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1991/V27/I5/130 1 Capponi J J, Chaillout C, Hewat A W, Leiay P, Maresio M, Nguyen N, Raveau B, Tholeace T L, Teurnier R. Eur Phys Lett, 1989; 3: 1310 2 Wang Wenhao, Tian Lu, Gong Yandong, Sun Yuzhen. Surf Sci, 1989; 213: 303 3 江晓平.低温物理学报,1987;9:192 4 Steiner P, Kinsinger V, Sander I, Siegwart B, Hufner S, Politis C, Hoppe R, Muller H P. Z Phys, 1987; B67: 497 5 Bianconi A, Congiu A, Castellano C, De Santis M, De Logu P, Gargano A, Giorgi R. Solid State Commun, 1987; 63: 1135 6 Anderson P W. In: Broglia R A, Schrieffer J R eds., Proc of the E. Fermi Inter. 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