Spontaneous Magnetostriction of Lu_2Fe_{17-x}Si_x

• Authors: A. Andreev , S. Daniš
• Languages of publication: EN

Abstracts

EN

Thermal expansion of Lu_2 Fe_{17-x}Si_x solid solutions was 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 ω_s in the ground state reaches 14.7×10^{-3} in Lu_2Fe_{17} and decreases monotonously to 8.9×10^{-3} at x = 3.4 following the reduction of magnetic moment. Despite still large ω_s, the Invar behavior observed in Lu_2Fe_{17} changes to a positive thermal expansion for x >1 due to increasing Curie temperature.

Keywords

EN

75.50.-y; 75.80.+q

Discipline

• 75.50.-y: Studies of specific magnetic materials
• 75.80.+q: Magnetomechanical effects, magnetostriction(for magnetostrictive devices, see 85.70.Ec)

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 239-242

Dates

published

2008-01

received

2007-07-09

Contributors

author

A. Andreev

• Institute of Physics ASCR, Na Slovance 2, 182 21 Prague, Czech Republic

author

S. Daniš

• Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Ke Karlovu 5, 121 16 Prague, Czech Republic

References

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Identifiers

DOI

10.12693/APhysPolA.113.239