Thermal expansion and sintering studies of Nd2-xCexCuO4±δ (0 ≤ x ≤ 0.20)

Autor:	S. J. Skinner, Masood Soorie
Rok vydání:	2006
Předmět:	Lanthanide Materials science Mechanical Engineering Analytical chemistry Sintering Atmospheric temperature range Condensed Matter Physics Thermal expansion Crystallography Secondary stage Tetragonal crystal system Mechanics of Materials Solid solution series General Materials Science Anisotropy
Zdroj:	Journal of Materials Research. 21:1248-1254
ISSN:	2044-5326 0884-2914
DOI:	10.1557/jmr.2006.0149
Popis:	Sintering behavior and thermal expansion properties of the solid solution series Nd2-xCexCuO4±δ (0 ≤ x ≤ 0.20) have been investigated over the temperature range of 298 to 1100 K. Significant anisotropy in the lattice expansion coefficient in the a/b and c crystallographic axes was noted on increasing Ce content, which is consistent with the tetragonal unit cell. The lattice expansion in the c axis was found to decrease on increasing temperature for compositions up to x = 0.10, which is likely to be from variations in the oxygen stoichiometry. A variation in the sintering behavior was also noted on varying Ce content, with the onset of sintering temperature reaching a maximum at x = 0.10. A secondary sintering stage was noted for compositions with x > 0.10. Associated with the introduction of a secondary stage on sintering is an overall increase in the temperature at which the sintering is at a maximum.
Databáze:	OpenAIRE
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