THE COULOMETRIC DETERMINATION OF AVERAGE VALENCE OF PR IN PRBA2CU3OY

Authors
KATO M SAGA N SAWAMURA T YOSHIMURA K KOSUGE K
Citation
M. Kato et al., THE COULOMETRIC DETERMINATION OF AVERAGE VALENCE OF PR IN PRBA2CU3OY, Physica. C, Superconductivity, 235, 1994, pp. 815-816
Citations number
7
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
235
Year of publication
1994
Part
2
Pages
815 - 816
Database
ISI
SICI code
0921-4534(1994)235:<815:TCDOAV>2.0.ZU;2-T
Abstract
The average valence of Pr in PrBa2Cu3Oy was measured by coulometric ti tration method. Consequently, the value was +3.00+/-0.02 for both samp les of the oxygen content y= 6 and 7. This fact means that holes still exist in PrBa2Cu3O7 phase, while they should be localized. The hole l ocalization may be caused by the hybridization of Pr-4f and O-2p bands , which were supported by our NQR and NMR experiments reported elsewhe re in this conference.