Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 68, Issue 7, Pages 1348-1353Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2007.02.028
Keywords
ceramics; crystal growth; neutron scattering; phase transitions
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The present study analyses the formation kinetics as well as the thermodynamic stability of the a and y polymorphs of Lu-doped Y2Si2O7. The analysis has been carried out by means of both in situ and ex situ diffraction experiments. Si-29 MAS-NMR spectroscopy has also been used to complement the information obtained from the diffraction measurements. The results indicate that both a and y polymorphs display the same temperature stability field (975 degrees C <= T < 1075 degrees C) although crystallization kinetics of a seems to be faster than that of y. (c) 2007 Published by Elsevier Ltd.
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