Investigation of Pr Valence and Site Occupancy in (Y, Pr)BCO by X-Ray Photoemission
M. Khaled
Department of Physics, University of Rajasthan, Jaipur, India
Search for more papers by this authorB. R. Sekhar
Department of Physics, University of Rajasthan, Jaipur, India
Search for more papers by this authorP. Srivastava
Department of Physics, University of Rajasthan, Jaipur, India
Search for more papers by this authorK. Kumari
Department of Physics, University of Rajasthan, Jaipur, India
Search for more papers by this authorK. B. Garg
Department of Physics, University of Rajasthan, Jaipur, India
Search for more papers by this authorM. Khaled
Department of Physics, University of Rajasthan, Jaipur, India
Search for more papers by this authorB. R. Sekhar
Department of Physics, University of Rajasthan, Jaipur, India
Search for more papers by this authorP. Srivastava
Department of Physics, University of Rajasthan, Jaipur, India
Search for more papers by this authorK. Kumari
Department of Physics, University of Rajasthan, Jaipur, India
Search for more papers by this authorK. B. Garg
Department of Physics, University of Rajasthan, Jaipur, India
Search for more papers by this authorAbstract
The valence of Pr with increasing Pr concentration in the Y1—xPrxBa2Cu3O7—δ system is investigated by measuring the Cu 2p, Pr 3d, Ba 3d, and O 1s photoemission spectra for different Pr concentrations (x = 0 to 1.0) and the related Pr oxide (Pr6O11). The Pr 3d spectra show that Pr exists in a mixed valence state. The possible presence of Pr at some Ba sites and its consequence is also discussed.
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