Abstract
The phase diagram of the CsBr-CaBr 2 system was re-determined by using differential thermal analysis and high temperature and room temperature X-ray diffraction analysis. It is concluded that there are three intermediate compounds in this system: a congruently melting compound, CsCaBr 3, with a melting point of 823°C and two incongruently melting compounds, Cs 2CaBr 4 and Cs 3Ca 2Br 7, whose peritectic points being 597°C and 635°C, respectively. X-ray diffraction analysis indicated that compound CsCaBr 3 is of slightly distorted perovskite structure.
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