X-ray emission and photoelectron spectra, and the location of fluorine atoms in strontium and calcium copper oxyfluorides

Autor(en): Kurmaev, EZ
Elokhina, LV
Fedorenko, VV
Bartkowski, S
Neumann, M
Greaves, C
Edwards, PP
Slater, PR
Francesconi, MG
Stichwörter: Physics; Physics, Condensed Matter
Erscheinungsdatum: 1996
Herausgeber: IOP PUBLISHING LTD
Enthalten in: JOURNAL OF PHYSICS-CONDENSED MATTER
Band: 8
Ausgabe: 26
Startseite: 4847
Seitenende: 4854
Zusammenfassung: 
X-ray emission and photoelectron spectra of Sr2CuO2F2+delta, Sr1.4Ba0.6CuO2F2+delta. CaSrCuO2F2+delta, and Ca2CuO2F2+delta cuprates are presented. It is found that the XPS F 1s binding energies of Sr2CuO2F2+delta and Ca2CuO2F2+delta are different (Delta E similar to 1.3 eV) and those of Sr1.4Ba0.6CuO2F2+delta and CaSrCuO2F2+delta have intermediate values. These differences in x-ray photoelectron spectra are attributed to the different preferential location of fluorine atoms in structures related to La2CuO4 and Nd2CuO4. The results obtained are in accordance with measurements of F K alpha x-ray emission spectra of the same compounds.
ISSN: 09538984
DOI: 10.1088/0953-8984/8/26/016

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