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An investigation of magnetic ordering in Gd x Ce 1− x Ru 2 by 155 Gd mössbauer spectroscopy
Author(s) -
Ruebenbauer K.,
Fink J.,
Schmidt H.,
Czjzek G.,
Tomala K.
Publication year - 1977
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.2220840225
Subject(s) - hyperfine structure , mössbauer spectroscopy , ferromagnetism , condensed matter physics , atmospheric temperature range , spectroscopy , materials science , field (mathematics) , magnetic field , chemistry , crystallography , physics , atomic physics , thermodynamics , quantum mechanics , mathematics , pure mathematics
Hyperfine interactions at 155 Gd nuclei in alloys Gd x Ce 1− x Ru 2 with 0.05 ≦ x ≦ 0.5 are investigated by Mössbauer spectroscopy. For x ≧ 0.11 a linear variation of the magnetic ordering temperature T M with x is found. The temperature dependence of the magnetic hyperfine fields below T M indicates a gradual reduction of the extension of ferromagnetic correlations with decreasing Gd concentration. For dilute alloys (0.11 ≦ x ≦ 0.18), the temperature and field dependence of the hyperfine field is characterized by nearly critical behaviour over a large range of temperatures.