Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1803073 | Journal of Magnetism and Magnetic Materials | 2008 | 4 Pages |
Abstract
The thermal expansion of Lu2Fe17−xSix solid solutions has been measured by X-ray powder diffraction. The magnetic ordering in all compounds within the homogeneity range (x⩽3.4) is accompanied by a large spontaneous volume magnetostriction, distributed anisotropically over the principal axes of the hexagonal crystal structure. The volume effect ωs in the ground state reaches 14.7×10−3 in Lu2Fe17 and decreases monotonously to 8.9×10−3 for x=3.4, following the reduction of magnetic moment. Despite a still large ωs, the Invar behavior observed in Lu2Fe17 changes to a positive thermal expansion for x>1 due to an increasing Curie temperature.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
A.V. Andreev, S. Daniš,