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Gradual Cerium Valence Change in the Solid Solution CeRu 1– x Pd x Al ( x = 0.1–0.9)
Author(s) -
Niehaus Oliver,
Janka Oliver
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201500139
Subject(s) - cerium , orthorhombic crystal system , arc melting , valence (chemistry) , solid solution , crystallography , crystal structure , materials science , annealing (glass) , magnetic susceptibility , lattice (music) , x ray crystallography , diffraction , condensed matter physics , analytical chemistry (journal) , chemistry , metallurgy , physics , microstructure , organic chemistry , chromatography , acoustics , optics
The solid solution CeRu 1– x Pd x Al was synthesized for x = 0.1–0.9 from the elements by arc‐melting and subsequent annealing and characterized by powder X‐ray diffraction. All members crystallize in the orthorhombic LaNiAl type structure, space group Pnma . The lattice parameters range from a = 718–722, b = 412–426, and c = 1588–1620 pm, but no linear change of the lattice parameters was found. Magnetic measurements reveal intermediate cerium valences, which change to more trivalent cerium with increasing Pd content. The susceptibility data was interpreted by either the Inter‐Configuration Fluctuation (ICF) model or the Curie‐Weiss law.