X-RAY POWDER DIFFRACTION STUDY OF THE YbCl2-Ybl2 SYSTEM.

Article abstract of DOI:10.1016/0022-4596(88)90332-5

The YbCl//2-Ybl//2 system has been investigated over the entire composition range by examining at room temperature both slowly cooled and quenched fused samples of the reactants. The system may be described in terms of mole% Ybl//2, Y, as follows: for Y equals approximately 85 to 100, a YbI//2 (CdI//2-type) solid solution region prevails; for Y equals approximately 55 to approximately 85, 'YbCl//0//. //3I//1//. //7,' YbCl//2, and 6R- 'YbCl//0//. //5I//1//. //5' are found; for Y equals 10 to approximately 55, the YbCl//2 and 6R- 'YbCl//0//. //5I//1//. //5' phases coexist; and for Y equals 0 to 10, a YbCl//2 solid solution region is found. The unusual behavior of the system is discussed and compared with that of related systems.