Author:
Gschneidner, Jr. Karl A.,Pecharsky Vitalij K.
Abstract
Abstract
The rare earth metals form the largest subset of the AB
2 Laves phase compounds. The rare earth element (R) is always the larger A metal, and they form Laves phases with most of the Group 7–10 elements, plus Mg and Al. As with all Laves phases, the rare earth RB
2 compounds conform with the size rule which had been established in the mid 1930s. Electron concentration effects have also been observed in the RB
2 phases. A number of anomalies and unusual behaviors have been discovered over the years: the La deficiency in “LaNi2” and of R in other “RNi2” Laves phase compounds; the crystal structure sequence in the RMn2 compound series; the relationship between the Debye temperature and the radius ratio; the Ce valence in the CeB
2 compounds; and the thermodynamic nature of the magnetic transition in the RCo2 phases.
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science
Cited by
52 articles.
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