Solid solution directionally solidified eutectic oxide composites: Part II. Co1-xNixO single-crystal growth and characterization

L. N. Brewer; V. P. Dravid; M. Velázquez; A. Revcolevschi

doi:10.1557/JMR.2002.0112

Solid solution directionally solidified eutectic oxide composites: Part II. Co_1-xNi_xO single-crystal growth and characterization

L. N. Brewer^*, V. P. Dravid, M. Velázquez, A. Revcolevschi

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article

5 Scopus citations

Abstract

The growth and structure of the Co_1-xNi_xO series of single crystals with 0 ≤ x ≤ 1 were investigated with the goal of achieving a single-phase crystal over several centimeters of bulk growth. The single crystals were grown via the floating zone method controlling the partial pressure of oxygen to prevent secondary phase precipitation. The resulting crystals were single phase for all compositions. CoO was a single-domain crystal but contained microvoids. The lattice parameters followed a rule-of-mixtures trend, but the coefficient of thermal expansion exhibited a maximum in the middle of the solid solution, which was attributed to enhanced vacancy formation.

Original language	English (US)
Pages (from-to)	768-773
Number of pages	6
Journal	Journal of Materials Research
Volume	17
Issue number	4
DOIs	https://doi.org/10.1557/JMR.2002.0112
State	Published - Apr 2002

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Brewer, L. N., Dravid, V. P., Velázquez, M., & Revcolevschi, A. (2002). Solid solution directionally solidified eutectic oxide composites: Part II. Co_1-xNi_xO single-crystal growth and characterization. Journal of Materials Research, 17(4), 768-773. https://doi.org/10.1557/JMR.2002.0112

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