XPS STUDY OF NaCuO2 AND RELATED COMPOUNDS

Chinese Journal of Applied Chemistry ›› 1991, Vol. 0 ›› Issue (3): 46-48.

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XPS STUDY OF NaCuO₂ AND RELATED COMPOUNDS

Zhao Liangzhong, Hu Yuxiu

Institute of Chemistry, Academia Sinica, Beijing 100080

Received:1990-04-10 Revised:1990-07-09 Published:1991-06-10 Online:1991-06-10

Abstract

Abstract: XPS was used to determine the Cu2p_3/2, Ols and Nals binding energies in NaCuO₂,CuO, Na₂O₂ and superconductor YBa₂Cu₃O_～7 and to study the stability of NaCuO₂.The chemical shifts of Cu₂p_3/2 and Ols levels between NaCuO₂ and CuO were found to be + 1.2and -0.9eV respectively.NaCuO₂ is unstable in moist air.When NaCuO₂ was heated at 920℃ with subsequent annealing at 600℃ in air, no Cu³⁺ were detected.Meanwhile Cu³⁺ in NaCuO₂ was reduced to Cu⁺ when the sample was heated in high vacuum.

Key words: XPS, NaCuO₂, superconductor, YBa₂Cu₃O_～7

Zhao Liangzhong, Hu Yuxiu. XPS STUDY OF NaCuO₂ AND RELATED COMPOUNDS[J]. Chinese Journal of Applied Chemistry, 1991, 0(3): 46-48.

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XPS STUDY OF NaCuO₂ AND RELATED COMPOUNDS

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