Published 1987 | Version v1
Journal article Metadata-only

Diffusion of metallic components in sintered rare earth orthocobaltites LnCoO3 (Ln=La, Pr, Nd, Sm, Eu, Gd)

Creators

  • 1. Ural'skij Gosudarstvennyj Univ., Sverdlovsk (USSR)

Description

Values of ion self-diffusion coefficients in sintered lanthanide orthocobaltites within 1273-1573 K are determined using 60Co, 141Pr, 153Sm, 155Eu radionuclides. Data obtained are compared with crystallochemical and thermodynamic properties of the compounds studied. Thermodynamic stability of orthocobaltites is shown to decrease with rising degree of lattice distortion from LaCoO3 to GdCoO3. As the lattice is compressed, the lanthanide self-diffusion coefficients decrease, and for cobalt - increase. The laws detected are explained within the scope of the close-packed polyhedron model

Additional details

Additional titles

Original title (Russian)
Диффузия металлических компонентов в спеченных ортокобальтитах лантаноидов NaCoO

Publishing Information

Journal Title
Dokl. Akad. Nauk SSSR
Journal Volume
292
Journal Issue
2
Series
Dokl. Akad. Nauk SSSR.
Journal Page Range
372-375
ISSN
0002-3264
CODEN
DANKA

INIS

Country of Publication
Russian Federation
Country of Input or Organization
USSR
INIS RN
18097896
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
COBALT OXIDES; COBALT 60; CRYSTAL LATTICES; EUROPIUM 155; FORMATION FREE ENTHALPY; OXIDES; PRASEODYMIUM 141; RARE EARTH COMPOUNDS; SAMARIUM 153; SELF-DIFFUSION; STABILITY; TEMPERATURE DEPENDENCE; VERY HIGH TEMPERATURE
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHALCOGENIDES; COBALT COMPOUNDS; COBALT ISOTOPES; CRYSTAL STRUCTURE; DAYS LIVING RADIOISOTOPES; DIFFUSION; ENERGY; EUROPIUM ISOTOPES; EVEN-ODD NUCLEI; FREE ENTHALPY; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MINUTES LIVING RADIOISOTOPES; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRASEODYMIUM ISOTOPES; RADIOISOTOPES; RARE EARTH NUCLEI; SAMARIUM ISOTOPES; STABLE ISOTOPES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YEARS LIVING RADIOISOTOPES