DEFECT CHEMISTRY OF BACUO2 .2. TRANSPORT-PROPERTIES AND NATURE OF DEFECTS

Authors
CHIODELLI G ANSELMITAMBURINI U ARIMONDI M SPINOLO G FLOR G
Citation
G. Chiodelli et al., DEFECT CHEMISTRY OF BACUO2 .2. TRANSPORT-PROPERTIES AND NATURE OF DEFECTS, Zeitschrift fur Naturforschung. A, A journal of physical sciences, 50(11), 1995, pp. 1059-1066
Citations number
11
Categorie Soggetti
Chemistry Physical",Physics
Journal title
Zeitschrift fur Naturforschung. A, A journal of physical sciences → ACNP
ISSN journal
09320784
Volume
50
Issue
11
Year of publication
1995
Pages
1059 - 1066
Database
ISI
SICI code
0932-0784(1995)50:11<1059:DCOB.T>2.0.ZU;2-Z
Abstract
The charge transport properties of ''BaCuO2'' with 88:90 (Ba:Cu) catio n ratio were characterized by thermopower, electrical conductivity and ionic transport number measurements in a wide range of temperature an d oxygen partial pressure conditions. The nature of carriers is always represented by small polarons due to self-trapping of the electronic holes generated by the oxygen non-stoichiometry equilibrium. Some anom alies in carrier mobility as ct function of temperature are shown not to be related to incomplete ionization of oxygen atoms on interstitial sites.