OXYGEN NONSTOICHIOMETRY OF LANTHANUM STRONTIUM CUPRATES LA2-XSRXCUO4-DELTA / PETROV AN,ZUEV AY,CHEREPANOV VA // JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS. - 1991. - V. 52, l. 7. - P. 841-844.

ISSN/EISSN:

0022-3697 / нет данных

Type:

Article

Abstract:

The oxygen nonstoichiometry (delta) of the La2-xSr(x)CuO4-delta (0.2 less-than-or-equal-to x less-than-or-equal-to 0.6) was studied as a function of temperature (900-1300 K) and oxygen partial pressure (3.6 x 10(-4)-1 atm.) using the thermogravimetric technique. The absolute value of oxygen nonstoichiometry were determined by the direct reduction in a flux of hydrogen. Experimental results are fitted by linear and parabolic equations. Probable disordering processes are discussed. Based on the experimental data thermodynamic parameters of disordering processes (DELTA-H0-degrees, DELTA-S0-degrees, DELTA-H(v)-degrees, DELTA-S(v)-degrees) have been calculated.

Author keywords:

LANTHANUM STRONTIUM CUPRATES; OXYGEN NONSTOICHIOMETRY; THERMODYNAMIC PROPERTIES OXIDES

DOI:

10.1016/0022-3697(91)90002-H

Web of Science ID:

ISI:A1991FV96800002

Соавторы в МНС:

Другие поля

Поле	Значение
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB
Language	English
Keywords-Plus	OXIDES
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Multidisciplinary; Physics, Condensed Matter
ResearcherID-Numbers	Cherepanov, Vladimir/E-6451-2014 Zuev, Andrey/E-6220-2014
ORCID-Numbers	Cherepanov, Vladimir/0000-0003-3653-6459
Number-of-Cited-References	8
Journal-ISO	J. Phys. Chem. Solids
Doc-Delivery-Number	FV968