High-temperature X-ray diffraction study of Co3O4: Transition from normal to disordered spinel |
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| Authors: | Xing Liu Charles T Prewitt |
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| Institution: | 1. Department of Earth and Space Sciences, State University of New York, 11794, Stony Brook, NY, USA
2. Geophysical Laboratory, Carnegie Institution of Washington, 2801 Upton Street, N.W., 20008, Washington, DC, USA
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| Abstract: | A high-temperature x-ray powder diffraction structural refinement indicates that the room-temperature normal spinel, Co2+Co
2
3+
]O4, transforms to a disordered spinel at temperatures above 1150±30 K, as shown by the decrease of the oxygen u parameter. It is also shown that this transition between normal and disordered spinel is a high order one, where the degree of disordering increases with increasing temperature up to the highest temperature of this study, 1201 K. |
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