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Magnetic properties of the Er(Co1−xCux)2 and Y(Co1−xCux)2 compounds

✍ Scribed by N.H. Duc; T.D. Hien; P.E. Brommer; J.J.M. Franse

Publisher
Elsevier Science
Year
1988
Weight
652 KB
Volume
149
Category
Article
ISSN
0378-4363

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✦ Synopsis

Magnetisation, thermal expansion and resistivity studies have been performed for Er(COl_xCUx) 2 compounds with x = 0.0, 0.05, 0.1, 0.2 and 0.3. The 3d magnetic moment of this series slowly decreases with copper concentration, whereas the Curie temperature increases with x after an initial decrease for low x values. The magnetic phase transition at T c changes from first order to second order around x = 0.1. These results are discussed within the Inoue-Shimizu model. Additional specific heat experiments are reported for Y(Co0.sCu02) 2. Volume thermal expansion measurements have been carried out on the orthorhombic compound ErCu 2 in order to confirm a previous analysis of the linear thermal expansion in terms of the volume derivative of the crystal-field parameters.

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