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Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air
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| Zeitschriftentitel: | Journal of the American Ceramic Society |
|---|---|
| Personen und Körperschaften: | , |
| In: | Journal of the American Ceramic Society, 96, 2013, 3, S. 966-971 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
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| Schlagwörter: |
| author_facet |
Perry, Nicola H. Mason, Thomas O. Perry, Nicola H. Mason, Thomas O. |
|---|---|
| author |
Perry, Nicola H. Mason, Thomas O. |
| spellingShingle |
Perry, Nicola H. Mason, Thomas O. Journal of the American Ceramic Society Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air Materials Chemistry Ceramics and Composites |
| author_sort |
perry, nicola h. |
| spelling |
Perry, Nicola H. Mason, Thomas O. 0002-7820 1551-2916 Wiley Materials Chemistry Ceramics and Composites http://dx.doi.org/10.1111/jace.12103 <jats:p>Phase equilibria of the zinc oxide–cobalt oxide system were studied by a combination of <jats:styled-content style="fixed-case">X</jats:styled-content>‐ray diffraction and <jats:italic>in situ</jats:italic> electrical conductivity and thermopower measurements of bulk ceramic specimens up to 1000°C in air. Rietveld refinement of <jats:styled-content style="fixed-case">X</jats:styled-content>‐ray diffraction patterns demonstrated increasing solubility of <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content> in <jats:styled-content style="fixed-case"><jats:roman>ZnO</jats:roman></jats:styled-content> with increasing temperature, which is supported by the slight increase in wurtzite (<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub>1−<jats:italic>x</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub><jats:italic>x</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content>) cell volume and lattice parameter <jats:italic>a</jats:italic> versus temperature determined for the phase boundary compositions. Similarly, the solubility of <jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content> in <jats:styled-content style="fixed-case"><jats:roman>CoO</jats:roman></jats:styled-content> increased with increasing temperature. In contrast, the spinel phase (<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub><jats:italic>z</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub>3−<jats:italic>z</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content><jats:sub>4</jats:sub>) exhibited retrograde solubility for <jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content>. Electrical measurements showed that the eutectoid temperature for transformation of rocksalt <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub>1−y</jats:sub><jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub><jats:italic>y</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content> into wurtzite and spinel is 894 ± 3°C, and the upper temperature limit of the stability of the spinel phase is 894°C–898°C for the compositions <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content>/(<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content>+<jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content>) = 0.82–1. The resulting composition‐temperature phase diagram is presented and compared to the earlier (1955) diagram by Robin.</jats:p> Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air Journal of the American Ceramic Society |
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Wiley, 2013 |
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2013 |
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Wiley |
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Journal of the American Ceramic Society |
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49 |
| title |
Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_unstemmed |
Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_full |
Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_fullStr |
Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_full_unstemmed |
Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_short |
Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_sort |
phase equilibria of the zinc oxide–cobalt oxide system in air |
| topic |
Materials Chemistry Ceramics and Composites |
| url |
http://dx.doi.org/10.1111/jace.12103 |
| publishDate |
2013 |
| physical |
966-971 |
| description |
<jats:p>Phase equilibria of the zinc oxide–cobalt oxide system were studied by a combination of <jats:styled-content style="fixed-case">X</jats:styled-content>‐ray diffraction and <jats:italic>in situ</jats:italic> electrical conductivity and thermopower measurements of bulk ceramic specimens up to 1000°C in air. Rietveld refinement of <jats:styled-content style="fixed-case">X</jats:styled-content>‐ray diffraction patterns demonstrated increasing solubility of <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content> in <jats:styled-content style="fixed-case"><jats:roman>ZnO</jats:roman></jats:styled-content> with increasing temperature, which is supported by the slight increase in wurtzite (<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub>1−<jats:italic>x</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub><jats:italic>x</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content>) cell volume and lattice parameter <jats:italic>a</jats:italic> versus temperature determined for the phase boundary compositions. Similarly, the solubility of <jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content> in <jats:styled-content style="fixed-case"><jats:roman>CoO</jats:roman></jats:styled-content> increased with increasing temperature. In contrast, the spinel phase (<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub><jats:italic>z</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub>3−<jats:italic>z</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content><jats:sub>4</jats:sub>) exhibited retrograde solubility for <jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content>. Electrical measurements showed that the eutectoid temperature for transformation of rocksalt <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub>1−y</jats:sub><jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub><jats:italic>y</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content> into wurtzite and spinel is 894 ± 3°C, and the upper temperature limit of the stability of the spinel phase is 894°C–898°C for the compositions <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content>/(<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content>+<jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content>) = 0.82–1. The resulting composition‐temperature phase diagram is presented and compared to the earlier (1955) diagram by Robin.</jats:p> |
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| description | <jats:p>Phase equilibria of the zinc oxide–cobalt oxide system were studied by a combination of <jats:styled-content style="fixed-case">X</jats:styled-content>‐ray diffraction and <jats:italic>in situ</jats:italic> electrical conductivity and thermopower measurements of bulk ceramic specimens up to 1000°C in air. Rietveld refinement of <jats:styled-content style="fixed-case">X</jats:styled-content>‐ray diffraction patterns demonstrated increasing solubility of <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content> in <jats:styled-content style="fixed-case"><jats:roman>ZnO</jats:roman></jats:styled-content> with increasing temperature, which is supported by the slight increase in wurtzite (<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub>1−<jats:italic>x</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub><jats:italic>x</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content>) cell volume and lattice parameter <jats:italic>a</jats:italic> versus temperature determined for the phase boundary compositions. Similarly, the solubility of <jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content> in <jats:styled-content style="fixed-case"><jats:roman>CoO</jats:roman></jats:styled-content> increased with increasing temperature. In contrast, the spinel phase (<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub><jats:italic>z</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub>3−<jats:italic>z</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content><jats:sub>4</jats:sub>) exhibited retrograde solubility for <jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content>. Electrical measurements showed that the eutectoid temperature for transformation of rocksalt <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub>1−y</jats:sub><jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub><jats:italic>y</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content> into wurtzite and spinel is 894 ± 3°C, and the upper temperature limit of the stability of the spinel phase is 894°C–898°C for the compositions <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content>/(<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content>+<jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content>) = 0.82–1. The resulting composition‐temperature phase diagram is presented and compared to the earlier (1955) diagram by Robin.</jats:p> |
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| spelling | Perry, Nicola H. Mason, Thomas O. 0002-7820 1551-2916 Wiley Materials Chemistry Ceramics and Composites http://dx.doi.org/10.1111/jace.12103 <jats:p>Phase equilibria of the zinc oxide–cobalt oxide system were studied by a combination of <jats:styled-content style="fixed-case">X</jats:styled-content>‐ray diffraction and <jats:italic>in situ</jats:italic> electrical conductivity and thermopower measurements of bulk ceramic specimens up to 1000°C in air. Rietveld refinement of <jats:styled-content style="fixed-case">X</jats:styled-content>‐ray diffraction patterns demonstrated increasing solubility of <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content> in <jats:styled-content style="fixed-case"><jats:roman>ZnO</jats:roman></jats:styled-content> with increasing temperature, which is supported by the slight increase in wurtzite (<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub>1−<jats:italic>x</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub><jats:italic>x</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content>) cell volume and lattice parameter <jats:italic>a</jats:italic> versus temperature determined for the phase boundary compositions. Similarly, the solubility of <jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content> in <jats:styled-content style="fixed-case"><jats:roman>CoO</jats:roman></jats:styled-content> increased with increasing temperature. In contrast, the spinel phase (<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub><jats:italic>z</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub>3−<jats:italic>z</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content><jats:sub>4</jats:sub>) exhibited retrograde solubility for <jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content>. Electrical measurements showed that the eutectoid temperature for transformation of rocksalt <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content><jats:sub>1−y</jats:sub><jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content><jats:sub><jats:italic>y</jats:italic></jats:sub><jats:styled-content style="fixed-case"><jats:roman>O</jats:roman></jats:styled-content> into wurtzite and spinel is 894 ± 3°C, and the upper temperature limit of the stability of the spinel phase is 894°C–898°C for the compositions <jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content>/(<jats:styled-content style="fixed-case"><jats:roman>Zn</jats:roman></jats:styled-content>+<jats:styled-content style="fixed-case"><jats:roman>Co</jats:roman></jats:styled-content>) = 0.82–1. The resulting composition‐temperature phase diagram is presented and compared to the earlier (1955) diagram by Robin.</jats:p> Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air Journal of the American Ceramic Society |
| spellingShingle | Perry, Nicola H., Mason, Thomas O., Journal of the American Ceramic Society, Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air, Materials Chemistry, Ceramics and Composites |
| title | Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_full | Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_fullStr | Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_full_unstemmed | Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_short | Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| title_sort | phase equilibria of the zinc oxide–cobalt oxide system in air |
| title_unstemmed | Phase Equilibria of the Zinc Oxide–Cobalt Oxide System in Air |
| topic | Materials Chemistry, Ceramics and Composites |
| url | http://dx.doi.org/10.1111/jace.12103 |