OXYGEN NONSTOICHIOMETRY AND CRYSTAL AND DEFECT STRUCTURE OF PRMNO3+Y AND NDMNO3+Y / CHEREPANOV VA,BARKHATOVA LY,PETROV AN,VORONIN VI // JOURNAL OF SOLID STATE CHEMISTRY. - 1995. - V. 118, l. 1. - P. 53-61.

ISSN/EISSN:

0022-4596 / нет данных

Type:

Article

Abstract:

Praseodymium and neodymium manganates LnMnO(3+y) have been prepared and characterized by powder X-ray and neutron diffraction together with thermogravimetric and chemical titration analysis. Both ternary oxides have an orthorhombically distorted perovskite-like structure (Pbnm space group) with unit cell parameters a = 5.4562(7), b = 5.5914(7), c = 7.672(1)Angstrom and a = 5.4116(9), b = 5.6928(9), c = 7.599(1) Angstrom for praseodymium and neodymium manganates, respectively. A small deficiency in manganese has been found together with an oxygen excess, which can likely be described by the cation disorder: Pr0.95Mn0.94O3 and Nd0.97Mn0.95O3. The thermodynamics of the oxygen exchange process have been described in terms of partial molar enthalpy and partial molar entropy of the oxygen dissolution in the lattice. (C) 1995 Academic Press, Inc.

Author keywords:

PHASE-TRANSITIONS; LAMNO3+LAMBDA; STABILITY; BEHAVIOR; LAMNO3; SYSTEM

DOI:

10.1006/jssc.1995.1309

Web of Science ID:

ISI:A1995RN49200008

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	AUG
Publisher	ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS
Address	525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495
Language	English
Keywords-Plus	PHASE-TRANSITIONS; LAMNO3+LAMBDA; STABILITY; BEHAVIOR; LAMNO3; SYSTEM
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear; Chemistry, Physical
ResearcherID-Numbers	Voronin, Vladimir/J-7733-2013 Cherepanov, Vladimir/E-6451-2014
ORCID-Numbers	Voronin, Vladimir/0000-0002-3901-9812 Cherepanov, Vladimir/0000-0003-3653-6459
Number-of-Cited-References	20
Usage-Count-Since-2013	11
Journal-ISO	J. Solid State Chem.
Doc-Delivery-Number	RN492