A modeling of the defect structure of copper-contatning lanthanum cobaltite / Petrov AN,Zuev AY,Pankov DV // RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY. - 2004. - V. 78, l. 9. - P. 1418-1422.

ISSN/EISSN:

0036-0244 / нет данных

Type:

Article

Abstract:

The experimental data on the oxygen nonstoichiometry delta of copper-containing lanthanum cobaltite LaCo0.7CU0.3O3 - (delta) were analyzed in the oxygen partial pressure and temperature ranges 10(-3) less than or equal to Po-2 less than or equal to1 atm and 973 less than or equal to T less than or equal to 1223 K, respectively. Two defect structure models were suggested for LaCo0.7CU0.3O3 -delta that satisfied the electroneutrality conditions, p + 2{[} V-o(..)] = {[}Cu'(Co)] (I, the model of quasi-free holes) and {[} Co-Co(-)] + 2{[}V (..)(O)] = {[} Cu'(Co)] (II, the model of localized holes). Smoothing the theoretical curves toward the experimental data by the nonlinear regression method was performed to show that the suggested defect structure models were adequate in the temperature range under consideration and to determine the equilibrium constants of point defect formation. The isothermal and isobaric dependences of the concentration of defects, including holes h(Co-co(.)) and electron acceptors Cu'(.)(co), were determined.

Author keywords:

OXYGEN NONSTOICHIOMETRY

DOI:

нет данных

Web of Science ID:

ISI:000224020400013

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	SEP
Publisher	INTERPERIODICA
Address	PO BOX 1831, BIRMINGHAM, AL 35201-1831 USA
Language	English
Keywords-Plus	OXYGEN NONSTOICHIOMETRY
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Physical
Author-Email	alexander.petrov@usu.ru
ResearcherID-Numbers	Zuev, Andrey/E-6220-2014
Number-of-Cited-References	12
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	2
Journal-ISO	Russ. J. Phys. Chem.
Doc-Delivery-Number	856CE