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The Effect of Rare‐Earth Impurities on the Electronic Transition in Ce
Author(s) -
Korshunov A. N.,
Fedorov V. M.,
Sharshakov I. M.,
Grokhotov V. T.
Publication year - 1981
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221030121
Subject(s) - impurity , cerium , rare earth , materials science , condensed matter physics , degeneracy (biology) , transition metal , ion , chemistry , physics , metallurgy , bioinformatics , biochemistry , organic chemistry , biology , catalysis
A model of the α‐γ transition in Ce 1− x R x alloys where R is a rare earth is presented which is based on the Ramirez‐Falikov (RF) zone model. It is shown that the decrease in the temperature region of the α‐γ transition in cerium when impurities are added depends in particular on the spin degeneracy (2 J + 1) of the impurity element ion. The amount of the impurity added affects the conditions under which the α‐γ transition of type I in pure Ce proves to be a transition of type II in Ce 1− x R x alloys. A comparison with experimental results is given.