Phase transitions in silver halides: silver iodide and its solid solutions with silver bromide
- 1 January 1970
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 3087-3092
- https://doi.org/10.1039/j19700003087
Abstract
There is no doubt of the existence of the B3 polytype of Agl. Both the B3 and B4 phases of Agl transform into the B23 phase around 145 °C; there is no evidence for the B3 →B4 transformation. The phase transitions of Agl, AgBr, and AgCl can be satisfactorily explained on the basis of the Born treatment of ionic solids. About 10 moles % AgBr enters into solid solution with the B3, B4, or B23 phase of Agl; about 25% Agl enters into solid solution with the B1 form of AgBr. We have reported the phase transitions of the Agl–AgBr solid solutions and a partial phase diagram of the system. The Born model explains the stability of the B1 form of the solid solution above ca. 10% AgBr.Keywords
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